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Autore: Grafiati

Pubblicato: 8 giugno 2024

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1

Blasingame, Tom, Erdal Ozkan, Mohan Kelkar, Jennifer Miskimins e Stephen Rassenfoss. "History Matching of Petroleum Engineering Graduation Rates". Journal of Petroleum Technology 74, n. 03 (1 marzo 2022): 28–31. http://dx.doi.org/10.2118/0322-0028-jpt.

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An email discussion among the four members focused on one of several charts created by Tom Blasingame, 2021 SPE president. A summary of their insights follows. Tom Blasingame explained the chart, which led to further discussion. The “reference” trend shown (red) occurs over the period from 1970 to 2000, which peaked at 1,587 BS graduates around 1984. It is a Gaussian probability distribution fitted to the data provided by Lloyd Heinze, professor at Texas Tech University’s Bob L. Herd Department of Petroleum (solid black line), and data extracted from a 1991 paper by John C. Calhoun, who was then at Texas A&M University and previously served as the 1964 SPE president. The reference trend is then shifted in time to the period from 2003 to 2033 (green). The mean and standard deviation of the statistical trends are the same; only the midpoint in time and peak in BS graduates are adjusted for each period. We note an excellent match of the data in the period from 2003 to 2033. Taking the reference trend back in time to the period from 1940 to 1970 (purple trend), we do not get a reasonable match of the data, with the exception of a slump from about 1951 to 1956. It is difficult to explain this feature, other than to note that in this timeframe the US began to import significant quantities of oil. Regardless, we note the statistical trend does capture the beginning and end of this distribution, and we recognize that there is no single peak in the data trend from 1940 to 1970. If we follow the historical trends and the current increase in oil prices and consider the need for oil and gas in the foreseeable future, we predict that the downward trend may stabilize as it did before and level out at the range of 250 graduates a year, while the demand for graduates is much higher. In this scenario, I consider the following positives and negatives. - Negative publicity around fossil fuels and social/political pressure to shut down the oil industry will continue, pulling the graduates’ figures down. - Current energy shortages and price spikes will remind the public that the end of oil and gas is not near, which will start to improve the image of petroleum engineering. - Deepening global economic crises and rising inflation will reduce people’s buying power and move them from highly idealistic to mostly pragmatic decisions. That, combined with the unmatched salary prospect of petroleum engineers with only a 4-year undergraduate degree, will increase the interest in the PE degree. - Considering that oil and gas will remain to be slightly over 50% of the energy mix, and that the energy demand will increase by 47% by 2050, we will need to produce roughly 45% more oil and gas than today. Even with the increased efficiency … we will need more petroleum engineers.

2

Nasreddine, Adam Y., e Robert Gallo. "Applying to Orthopaedic Residency and Matching Rates". Journal of Bone and Joint Surgery 101, n. 24 (dicembre 2019): e134. http://dx.doi.org/10.2106/jbjs.18.00371.

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3

Akay, M., e H. H. Szeta. "Analyzing fetal breathing rates using matching pursuits". IEEE Engineering in Medicine and Biology Magazine 14, n. 2 (1995): 195–98. http://dx.doi.org/10.1109/51.376759.

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4

Hall, Robert E., e Sam Schulhofer-Wohl. "Measuring Job-Finding Rates and Matching Efficiency with Heterogeneous Job-Seekers". American Economic Journal: Macroeconomics 10, n. 1 (1 gennaio 2018): 1–32. http://dx.doi.org/10.1257/mac.20170061.

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Matching efficiency is the productivity of the process for matching job-seekers to available jobs. Job-finding is the output; vacant jobs and active job-seekers are the inputs.We develop a framework for measuring matching productivity when the population of job-seekers is heterogeneous. We find that overall matching efficiency declined smoothly over the period from 2001 through 2013. Measures of matching efficiency that neglect heterogeneity among the unemployed and also neglect job-seekers other than the unemployed suggest a large 28 percent decline in efficiency between 2007 and 2009. Most of this apparent decline results from changes in the composition of job-seekers. (JEL E24, J22, J23, J24, J41, J63)

5

Jaffe, Sonia, e Simon Weber. "The effect of meeting rates on matching outcomes". Economic Theory 67, n. 2 (24 marzo 2018): 363–78. http://dx.doi.org/10.1007/s00199-018-1113-0.

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6

Al-Husseini, Ahmed, e Sameera Hamd-Allah. "History Matching of Reservoir Simulation Model: a Case Study from the Mishrif Reservoir, Buzurgan Oilfield, Iraq". Iraqi Geological Journal 56, n. 1C (31 marzo 2023): 215–34. http://dx.doi.org/10.46717/igj.56.1c.15ms-2023-3-26.

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In petroleum reservoir engineering, history matching refers to the calibration process in which a reservoir simulation model is validated through matching simulation outputs with the measurement of observed data. A traditional history matching technique is performed manually by engineering in which the most uncertain observed parameters are changed until a satisfactory match is obtained between the generated model and historical information. This study focuses on step by step and trial and error history matching of the Mishrif reservoir to constrain the appropriate simulated model. Up to 1 January 2021, Buzurgan Oilfield, which has eighty-five producers and sixteen injectors and has been under production for 45 years when it started in 1976. Reservoir exhibits heterogeneity in porosity and permeability throughout the field, therefore it’s a big challenge to control all reservoir properties during matching process. The historical matching process includes matching field and wells oil and water production rates, water injection rates, water cut, and reservoir static pressure. Finally, the results show that the good matching between simulated model and observed data; oil and water production rates, water injection rates, water cut, and static reservoir pressure which allow for implementing perfect future production forecasting strategies.

7

Lucas, Hannah B., Ian McKnight, Regan Raines, Abdullah Hijazi, Christoph Hart, Chan Lee, Do-Gyoon Kim, Wei Li, Peter H. U. Lee e Joon W. Shim. "Factors Associated with Mutations: Their Matching Rates to Cardiovascular and Neurological Diseases". International Journal of Molecular Sciences 22, n. 10 (11 maggio 2021): 5057. http://dx.doi.org/10.3390/ijms22105057.

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Monogenic hypertension is rare and caused by genetic mutations, but whether factors associated with mutations are disease-specific remains uncertain. Given two factors associated with high mutation rates, we tested how many previously known genes match with (i) proximity to telomeres or (ii) high adenine and thymine content in cardiovascular diseases (CVDs) related to vascular stiffening. We extracted genomic information using a genome data viewer. In human chromosomes, 64 of 79 genetic loci involving >25 rare mutations and single nucleotide polymorphisms satisfied (i) or (ii), resulting in an 81% matching rate. However, this high matching rate was no longer observed as we checked the two factors in genes associated with essential hypertension (EH), thoracic aortic aneurysm (TAA), and congenital heart disease (CHD), resulting in matching rates of 53%, 70%, and 75%, respectively. A matching of telomere proximity or high adenine and thymine content projects the list of loci involving rare mutations of monogenic hypertension better than those of other CVDs, likely due to adoption of rigorous criteria for true-positive signals. Our data suggest that the factor–disease matching rate is an accurate tool that can explain deleterious mutations of monogenic hypertension at a >80% match—unlike the relatively lower matching rates found in human genes of EH, TAA, CHD, and familial Parkinson’s disease.

8

Suchitra, Joyce B., e Nanjaiah Lakshmidevi. "Hospital-acquired infections: are prevention strategies matching incidence rates?" Healthcare infection 14, n. 1 (marzo 2009): 21–25. http://dx.doi.org/10.1071/hi09001.

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9

Adan, Ivo, e Gideon Weiss. "Exact FCFS Matching Rates for Two Infinite Multitype Sequences". Operations Research 60, n. 2 (aprile 2012): 475–89. http://dx.doi.org/10.1287/opre.1110.1027.

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10

Kronebusch, Karl. "Matching Rates and Mandates: Federalism and Children's Medicaid Enrollment". Policy Studies Journal 32, n. 3 (agosto 2004): 317–39. http://dx.doi.org/10.1111/j.1541-0072.2004.00068.x.

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11

Cruickshank, Sam S., e Benedikt R. Schmidt. "Error rates and variation between observers are reduced with the use of photographic matching software for capture-recapture studies". Amphibia-Reptilia 38, n. 3 (2017): 315–25. http://dx.doi.org/10.1163/15685381-00003112.

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Photographic capture-mark-recapture (CMR) permits individual recognition whilst avoiding many of the concerns involved with marking animals. However, the construction of capture histories from photographs is a time-consuming process. Furthermore, matching accuracy is determined based on subjective judgements of the person carrying out the matching, which can lead to errors in the resulting datasets – particularly in long-term projects where multiple observers match images. We asked 63 volunteers to carry out two photographic-matching exercises using a database of known individuals of the yellow-bellied toad (Bombina variegata). From these exercises, we quantified the matching accuracy of volunteers in terms of false-acceptance and false-rejection rates. Not only were error rates greatly reduced with the use of photographic-matching software, but variation in error rates among volunteers was also lowered. Furthermore, the use of matching software led to substantial increases in matching speeds and an 87% reduction in the false-rejection rate. As even small error rates have the potential to bias CMR analyses, these results suggest that computer software could substantially reduce errors in CMR datasets. The time-savings and reduction in variance among observers suggest that such methods could be particularly beneficial in long-term CMR projects where a large number of images may be matched by multiple observers.

12

SAITOH, Fumihiko. "High-speed Image Template Matching by Selecting Block Areas Based on SN-ratios of Matching Rates." Journal of the Japan Society for Precision Engineering 68, n. 6 (2002): 817–21. http://dx.doi.org/10.2493/jjspe.68.817.

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13

Honhon, Dorothée, e Kyle Hyndman. "Flexibility and Reputation in Repeated Prisoner’s Dilemma Games". Management Science 66, n. 11 (novembre 2020): 4998–5014. http://dx.doi.org/10.1287/mnsc.2019.3495.

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We study how three matching institutions, differing in how relationships are dissolved, affect cooperation in a repeated prisoner’s dilemma and how cooperation rates are affected by the presence of a reputation mechanism. Although cooperation is theoretically sustainable under all institutions, we show experimentally that cooperation rates are lowest under random matching, highest under fixed matching, and intermediate in a flexible matching institution, where subjects have the option to dissolve relationships. Our results also suggest important interactions between the matching institution and reputation mechanism. Under both the random matching and flexible matching institutions, both subjective (based on subjects’ ratings) and objective (based on subjects’ actions) reputation mechanisms lead to substantial increases in cooperative behavior. However, under fixed matching, only the subjective reputation mechanism leads to higher cooperation. We argue that these differences are due to different reputation mechanisms being more forgiving of early deviations from cooperation under certain matching institutions, which gives subjects the ability to learn the value of cooperation rather than getting stuck with a bad reputation and, consequently, uncooperative relationships. This paper was accepted by Yan Chen, decision analysis.

14

Lin, Tzuling, e Cary Chi-liang Tsai. "NATURAL HEDGES WITH IMMUNIZATION STRATEGIES OF MORTALITY AND INTEREST RATES". ASTIN Bulletin 50, n. 1 (gennaio 2020): 155–85. http://dx.doi.org/10.1017/asb.2019.38.

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AbstractIn this paper, we first derive closed-form formulas for mortality-interest durations and convexities of the prices of life insurance and annuity products with respect to an instantaneously proportional change and an instantaneously parallel movement, respectively, in μ* (the force of mortality-interest), the addition of μ (the force of mortality) and δ (the force of interest). We then build several mortality-interest duration and convexity matching strategies to determine the weights of whole life insurance and deferred whole life annuity products in a portfolio and evaluate the value at risk and the hedge effectiveness of the weighted portfolio surplus at time zero. Numerical illustrations show that using the mortality-interest duration and convexity matching strategies with respect to an instantaneously proportional change in μ* can more effectively hedge the longevity risk and interest rate risk embedded in the deferred whole life annuity products than using the mortality-only duration and convexity matching strategies with respect to an instantaneously proportional shift or an instantaneously constant movement in μ only.

15

Zhang, Chen Jason, Lei Chen, H. V. Jagadish, Mengchen Zhang e Yongxin Tong. "Reducing Uncertainty of Schema Matching via Crowdsourcing with Accuracy Rates". IEEE Transactions on Knowledge and Data Engineering 32, n. 1 (1 gennaio 2020): 135–51. http://dx.doi.org/10.1109/tkde.2018.2881185.

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Ohashi, Yoichi, Yuichi Iwaki e Atsuhito Yagihashi. "Effect of blood group matching on liver transplant survival rates". Journal of Hepato-Biliary-Pancreatic Surgery 2, n. 2 (giugno 1995): 134–38. http://dx.doi.org/10.1007/bf02348738.

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17

Acharya, Sushant, e Shu Lin Wee. "Rational Inattention in Hiring Decisions". American Economic Journal: Macroeconomics 12, n. 1 (1 gennaio 2020): 1–40. http://dx.doi.org/10.1257/mac.20180390.

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We provide an information-based theory of matching efficiency fluctuations. Rationally inattentive firms have limited capacity to process information and cannot perfectly identify suitable applicants. During recessions, higher losses from hiring unsuitable workers cause firms to be more selective in hiring. When firms cannot obtain sufficient information about applicants, they err on the side of caution and accept fewer applicants to minimize losses from hiring unsuitable workers. Pro-cyclical acceptance rates drive a wedge between meeting and hiring rates, explaining fluctuations in matching efficiency. Quantitatively, our model replicates the joint behavior of unemployment rates and matching efficiency observed since the Great Recession. (JEL D83, E24, E32, J23, J41, M51)

18

Bouincha, Mohamed, Joull Youness e Mustapha Berrouyne. "The effectiveness of education assistance programs using AI innovation. Case for tackling school dropout in Morocco". Data and Metadata 3 (13 aprile 2024): 206. http://dx.doi.org/10.56294/dm2024206.

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Introduction: since 2008, Morocco’s Tayssir program has been a key public initiative aimed at combating school dropout rates, by offering conditional cash transfers to households with school-aged children, particularly targeting rural communities with high poverty rates. This initiative seeks to ensure equitable access to education, regardless of socioeconomic status, and boosted school attendance rates. Objective: to assess the impact of the Tayssir program on reducing school dropout rates in rural Morocco and to examine the effectiveness of targeting strategies and incentives provided to families. Methods: the study utilized cross-sectional data from the Household Survey Panel Data. Propensity score matching (PSM) techniques were employed to estimate the program’s impact on school dropout rates, comparing beneficiaries with a control group not participating in the program. Various statistical analyses were conducted to explore the characteristics of participants and to validate the logistic model used. Results: the propensity score matching analysis revealed a statistically significant reduction in school dropout rates among beneficiaries of the Tayssir program. The average treatment effect on the treated (ATET) demonstrated a decrease in dropout rates by approximately 43 % using one-to-one matching, 42,7 % with k-nearest neighbor, and 38,6 % via kernel matching methods. Furthermore, no significant gender differences were observed in the program’s impact. Conclusions: the Tayssir program has significantly contributed to reducing school dropout rates in rural Morocco, ensuring better access to education for children from disadvantaged backgrounds. The program’s effectiveness underscores the importance of targeted interventions and conditional cash transfers in promoting educational attainment. Future recommendations include expanding the beneficiary base, refining targeting mechanisms, and establishing a unified social registry to improve program governance.

19

Antonelli, Fabio, Alessandro Ramponi e Sergio Scarlatti. "A moment matching method for option pricing under stochastic interest rates". Applied Stochastic Models in Business and Industry 37, n. 4 (7 maggio 2021): 802–22. http://dx.doi.org/10.1002/asmb.2624.

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WIGGINS, C. DONALD. "Matching Cash Flows and Discount Rates in Discounted Cash Flow Appraisals". Business Valuation Review 18, n. 1 (marzo 1999): 26–35. http://dx.doi.org/10.5791/0882-2875-18.2.26.

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21

Grabia, Tomasz. "Matching NBP interest rates to different versions of the Taylor rule". Olsztyn Economic Journal 14, n. 2 (28 giugno 2019): 165–77. http://dx.doi.org/10.31648/oej.3969.

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The interest rate is the basic instrument of monetary policy, directly or indirectly affecting basic macroeconomic variables, such as inflation, unemployment and economic growth. The aim of the article is to compare the NBP reference rate with hypothetical rates calculated on the basis of different variants of the Taylor rule and to indicate which of those variants is best suited to the situation in Poland. The study period of 2000-2017 was adopted for the analysis. On its basis, it was found that in most cases the real interest rate of the central bank in Poland strongly coincided with rates that would have been set if one of the varieties of the Taylor rule had been in force. The best match coincided with the modified version of this rule, which was created after the economic crisis. That means that the NBP took into account both the deviations of inflation from the target and the GDP gap when making decisions regarding interest rates.

22

Salay, C. R., e D. W. Elliott. "Matching engine and aircraft lapse rates for high speed civil aircraft". Journal of Aircraft 33, n. 1 (gennaio 1996): 61–67. http://dx.doi.org/10.2514/3.46903.

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23

Ferrari, Paolo, Peter D. Hughes, Solomon J. Cohney, Claudia Woodroffe, Samantha Fidler e Lloyd D’Orsogna. "ABO-Incompatible Matching Significantly Enhances Transplant Rates in Kidney Paired Donation". Transplantation Journal 96, n. 9 (novembre 2013): 821–26. http://dx.doi.org/10.1097/tp.0b013e3182a01311.

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24

Tzeng, Jung-Ying, William Byerley, B. Devlin, Kathryn Roeder e Larry Wasserman. "Outlier Detection and False Discovery Rates for Whole-Genome DNA Matching". Journal of the American Statistical Association 98, n. 461 (marzo 2003): 236–46. http://dx.doi.org/10.1198/016214503388619256.

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25

Chang, Yongsung, Jaeryang Nam e Changyong Rhee. "Trends in unemployment rates in Korea: A search-matching model interpretation". Journal of the Japanese and International Economies 18, n. 2 (giugno 2004): 241–63. http://dx.doi.org/10.1016/s0889-1583(03)00048-0.

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26

Cornelson, Kirsten, e Aloysius Siow. "A Quantitative Review of Marriage Markets: How Inequality is Remaking the American Family by Carbone and Cahn". Journal of Economic Literature 54, n. 1 (1 marzo 2016): 193–207. http://dx.doi.org/10.1257/jel.54.1.193.

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June Carbone and Naomi Cahn argue that growing earnings inequality and the increased educational attainment of women, relative to men, have led to declining marriage rates for less-educated women and an increase in positive assortative matching since the 1970s. These trends have negatively affected the welfare of children, as they increase the proportion of poor, single-female-headed households. Using data on marriage markets defined by state, race and time, and the Choo–Siow marriage matching function, this review provides a quantitative assessment of these claims. We show that changes in earnings inequality had a qualitatively consistent but modest quantitative impact on marriage rates and positive assortative matching. Neither changes in the wage distributions nor educational attainments can explain the large decline in marriage rates over this period. (JEL C78, D63, J12, J15, J16, J31)

27

Jeavons, J., P. Hodgson e J. Upton. "Matching odour treatment processes to odour sources". Water Science and Technology 41, n. 9 (1 maggio 2000): 227–32. http://dx.doi.org/10.2166/wst.2000.0212.

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Severn Trent Water Ltd. has reviewed the performance of its existing odour control technology and conducted trials with new technology. Processes were then selected for a costing exercise for air flow rates and odour concentrations typically found at sewage treatment works. The most cost effective processes for various applications are outlined.

28

Greer, Melody Lynn. "4294 Patient Matching Errors and Associated Safety Events". Journal of Clinical and Translational Science 4, s1 (giugno 2020): 42. http://dx.doi.org/10.1017/cts.2020.160.

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OBJECTIVES/GOALS: Errors in patient matching could result in serious adverse safety events. Unlike publicized mix-ups by healthcare providers these errors are insidious and with increased data sharing, this is a growing concern in healthcare. The following project will examine patient matching errors and quantify their association with safety. METHODS/STUDY POPULATION: EHR systems perform matching out-of-the-box with unknown quality. Using matching processes outside the EMR, the rate at which matching errors are present was quantified and the erroneous records were flagged providing both comparative measures and data necessary to evaluate patient safety. To understand the relationship between matching and safety we will establish a percent of voluntarily reported safety events in our institution where a matching error existed during an encounter. Any safety events occurring for a flagged patient will be reviewed to determine if matching errors contributed to the safety problem. Not all safety events are reported so we will perform full chart review of a filtered list of medical records that have a higher likelihood of safety events. RESULTS/ANTICIPATED RESULTS: We were able to quantify matching errors, and the preliminary matching error rate is approximately 1%, representing over 700 patients. The work is in progress and we are beginning to determine the association between safety events and incorrect matching. Together these results will provide an incentive to identify errors, make corrections, and develop methods to achieve these objectives. The number of matching errors impacts patient care as well as business operations and is likely to have a negative financial impact on institutions with high error rates regardless of its relationship to safety. DISCUSSION/SIGNIFICANCE OF IMPACT: Patient matching is bundled with EHR software and institutions have little control over error rates, yet bear the liability for resulting clinical error. Institutions need to be able to identify undetected matching errors and any associated safety events and this project will provide that solution.

29

Wei, Yehua, Jiaming Xu e Sophie H. Yu. "Constant Regret Primal-Dual Policy for Multi-way Dynamic Matching". ACM SIGMETRICS Performance Evaluation Review 51, n. 1 (26 giugno 2023): 79–80. http://dx.doi.org/10.1145/3606376.3593532.

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We study a discrete-time dynamic multi-way matching model. There are finitely many agent types that arrive stochastically and wait to be matched. State-of-the-art dynamic matching policies in the literature require the knowledge of all system parameters to determine an optimal basis of the fluid relaxation, and focus on controlling the number of waiting agents using only matches in the optimal basis [4,6,7]. In this paper, we propose a primal-dual policy that schedule matches for future arrivals based on an estimator for the dual solution. Our policy does not require the knowledge of optimal bases, and is the first to achieve constant regret at all times under unknown arrival rates. In addition, we show that when the arrival rates are known, the primal-dual policy achieves the optimal scaling as the lower-bound described in [6,7]. Furthermore, we find that when the arrival rates are known, the primal-dual policy can significantly outperform alternative dynamic matching policies in numerical simulations.

30

LOVE, DAVID A. "What can the life-cycle model tell us about 401(k) contributions and participation?" Journal of Pension Economics and Finance 6, n. 2 (11 giugno 2007): 147–85. http://dx.doi.org/10.1017/s1474747206002617.

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This paper solves and simulates a stochastic life-cycle model of an economy with 401(k) plans. We use the model to establish a benchmark for patterns of contributions and participation and show how these patterns depend on such features as employer matching, vesting policies, and the ability to make early withdrawals. Consistent with empirical studies, the model predicts relatively low participation rates among younger workers and shows that these rates tend to rise with more generous matching, lower vesting periods, and improved liquidity.

31

Özkan, Erhun, e Amy R. Ward. "Dynamic Matching for Real-Time Ride Sharing". Stochastic Systems 10, n. 1 (marzo 2020): 29–70. http://dx.doi.org/10.1287/stsy.2019.0037.

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In a ride-sharing system, arriving customers must be matched with available drivers. These decisions affect the overall number of customers matched, because they impact whether future available drivers will be close to the locations of arriving customers. A common policy used in practice is the closest driver policy, which offers an arriving customer the closest driver. This is an attractive policy because it is simple and easy to implement. However, we expect that parameter-based policies can achieve better performance. We propose matching policies based on a continuous linear program (CLP) that accounts for (i) the differing arrival rates of customers and drivers in different areas of the city, (ii) how long customers are willing to wait for driver pickup, (iii) how long drivers are willing to wait for a customer, and (iv) the time-varying nature of all the aforementioned parameters. We prove asymptotic optimality of a forward-looking CLP-based policy in a large market regime and of a myopic linear program–based matching policy when drivers are fully utilized. When pricing affects customer and driver arrival rates and parameters are time homogeneous, we show that asymptotically optimal joint pricing and matching decisions lead to fully utilized drivers under mild conditions.

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Ghenuche, Petru, Mathieu Mivelle, Juan de Torres, Satish Babu Moparthi, Hervé Rigneault, Niek F. Van Hulst, María F. García-Parajó e Jérôme Wenger. "Matching Nanoantenna Field Confinement to FRET Distances Enhances Förster Energy Transfer Rates". Nano Letters 15, n. 9 (5 agosto 2015): 6193–201. http://dx.doi.org/10.1021/acs.nanolett.5b02535.

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SAITOH, Fumihiko. "Image Template Matching by Selecting Block Areas Based on Normalized Correlation Rates." Journal of the Japan Society for Precision Engineering 67, n. 8 (2001): 1271–75. http://dx.doi.org/10.2493/jjspe.67.1271.

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Chen, Hsiao-Chi, e Yunshyoung Chow. "On the convergence of evolution processes with time-varying mutations and local interaction". Journal of Applied Probability 38, n. 2 (giugno 2001): 301–23. http://dx.doi.org/10.1239/jap/996986746.

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This paper analyzes players’ long-run behavior in an evolutionary model with time-varying mutations under both uniform and local interaction rules. It is shown that a risk-dominant Nash equilibrium in a 2 × 2 coordination game would emerge as the long-run equilibrium if and only if mutation rates do not decrease to zero too fast under both interaction methods. The convergence rates of the dynamic system under both interaction rules are also derived. We find that the dynamic system with local matching may not converge faster than that with uniform matching.

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Chen, Hsiao-Chi, e Yunshyoung Chow. "On the convergence of evolution processes with time-varying mutations and local interaction". Journal of Applied Probability 38, n. 02 (giugno 2001): 301–23. http://dx.doi.org/10.1017/s0021900200019872.

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This paper analyzes players’ long-run behavior in an evolutionary model with time-varying mutations under both uniform and local interaction rules. It is shown that a risk-dominant Nash equilibrium in a 2 × 2 coordination game would emerge as the long-run equilibrium if and only if mutation rates do not decrease to zero too fast under both interaction methods. The convergence rates of the dynamic system under both interaction rules are also derived. We find that the dynamic system with local matching may not converge faster than that with uniform matching.

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Simukanga, Alinani, Misaki Kobayashi, Lauren Etter, Wenda Qin, Rachel Pieciak, Duarte Albuquerque, Yu-Jen Chen et al. "The impact of ear growth on identification rates using an ear biometric system in young infants". Gates Open Research 5 (15 dicembre 2021): 179. http://dx.doi.org/10.12688/gatesopenres.13459.1.

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Background Accurate patient identification is essential for delivering longitudinal care. Our team developed an ear biometric system (SEARCH) to improve patient identification. To address how ear growth affects matching rates longitudinally, we constructed an infant cohort, obtaining ear image sets monthly to map a 9-month span of observations. This analysis had three main objectives: 1) map trajectory of ear growth during the first 9 months of life; 2) determine the impact of ear growth on matching accuracy; and 3) explore computer vision techniques to counter a loss of accuracy. Methodology Infants were enrolled from an urban clinic in Lusaka, Zambia. Roughly half were enrolled at their first vaccination visit and ~half at their last vaccination. Follow-up visits for each patient occurred monthly for 6 months. At each visit, we collected four images of the infant’s ears, and the child’s weight. We analyze ear area versus age and change in ear area versus age. We conduct pair-wise comparisons for all age intervals. Results From 227 enrolled infants we acquired age-specific datasets for 6 days through 9 months. Maximal ear growth occurred between 6 days and 14 weeks. Growth was significant until 6 months of age, after which further growth appeared minimal. Examining look-back performance to the 6-month visit, baseline pair-wise comparisons yielded identification rates that ranged 46.9–75%. Concatenating left and right ears per participant improved identification rates to 61.5–100%. Concatenating images captured on adjacent visits further improved identification rates to 90.3–100%. Lastly, combining these two approaches improved identification to 100%. All matching strategies showed the weakest matching rates during periods of maximal growth (i.e., <6 months). Conclusion By quantifying the effect that ear growth has on performance of the SEARCH platform, we show that ear identification is a feasible solution for patient identification in an infant population 6 months and above.

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Johnson, Jesse W., Toni Van Laarhoven e Alan C. Repp. "Effects on stereotypy and other challenging behavior of matching rates of instruction to free-operant rates of responding". Research in Developmental Disabilities 23, n. 4 (luglio 2002): 266–84. http://dx.doi.org/10.1016/s0891-4222(02)00120-8.

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Kurnaz, Selin, Arturo Loaiza-Bonilla, Darla Carvallo Castañeda e Oz Huner. "Effect of a novel artificial intelligence (AI) –enabled multi-trial matching system on patient matching using real-world data." Journal of Clinical Oncology 42, n. 16_suppl (1 giugno 2024): e13501-e13501. http://dx.doi.org/10.1200/jco.2024.42.16_suppl.e13501.

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e13501 Background: Currently clinical research teams at sites are manually matching patients to clinical trials, where each trial in our experience takes at least 25 minutes using highly trained dedicated resources. This limits cancer patients’ clinical trial options and enrollment rates. Moreover, the lack of NGS testing results may also negatively impact matching to clinical trials in targeted therapies. PCC, a consortium of 7 of the Top 20 Pharmaceutical companies, collaborated with Massive Bio to demonstrate how cancer patients’ matching rates can be increased if patients are prescreened to multiple trials simultaneously (i.e. multi-trial matching) instead of a single trial and NGS testing results are integrated into the matching process. Methods: Massive Bio has developed a first-in-class AI-enabled matching system to extract 180 structured clinical data from medical records using computer vision and natural language processing and a recommendation system for matching patients to parameterized inclusion/exclusion (I/E) criteria from over 14,000 actively recruiting interventional clinical trials.Our analysis included a sample of 5,707 cancer patients from the Massive Bio Synergy AI real-world database, corresponding to tumor types in 23 selected trials. We developed a decision-tree algorithm for retrospective matching analysis using modeled I/E criteria and compared these results to the theoretical matching rate (TMR) for each trial based on tumor type and biomarker prevalence, extent of disease at diagnosis and prior treatment history. Results: 690 patients matched to at least one trial were matched to 1.82 times more trials in multi-trial matching; 2.10 times more potential matches were obtained with hypothetical 100% NGS testing; and 99.9% matching time was reduced with AI enabled system; key findings are summarized (Table). Conclusions: This study confirms the underutilization of NGS technology and substantial benefits of AI and NGS in cancer trial matching. Their use resulted in a nearly two-fold increase in potential patient eligibility for trials, and an unprecedented reduction in manual effort, underscoring a significant advancement in the efficiency of the clinical trial matching process. A prospective country-wide analysis is under consideration. [Table: see text]

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Gaugler, Barbara B., e George C. Thornton. "Matching Job Previews to Individual Applicants' Needs". Psychological Reports 66, n. 2 (aprile 1990): 643–52. http://dx.doi.org/10.2466/pr0.1990.66.2.643.

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An organizational recruitment simulation was conducted to examine the extent to which applicants' initial impressions of the organization are a function of the extent to which their highly valued needs are addressed and the realism of the portrayal in a job preview. Tailoring the content of job previews to the individual's needs raised applicants' expectations about most work factors in the organization. However, realism in the job preview lowered expectations about the organization as well as anticipated job offer acceptance rates and commitment to the organization.

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Kaido, Toshimi, Satoshi Morita, Sachiko Tanaka, Kohei Ogawa, Akira Mori, Etsuro Hatano e Shinji Uemoto. "Long-Term Outcomes of Hepatic Resection versus Living Donor Liver Transplantation for Hepatocellular Carcinoma: A Propensity Score-Matching Study". Disease Markers 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/425926.

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Hepatic resection (HR) and liver transplantation (LT) are surgical treatment options for hepatocellular carcinoma (HCC). However, it is clinically impossible to perform a randomized, controlled study to determine the usefulness of these treatments. The present study compared survival rates and recurrence rates of HR versus living donor LT (LDLT) for HCC by using the propensity score method. Between January 1999 and August 2012, 936 patients (732 HR, 204 LDLT) underwent surgical therapy for HCC in our center. Using the propensity score matching, 80 well-balanced patients were defined. The 1- and 5-year overall survival rates were 90% and 53% in the HR group and 82% and 63% in the LT group, respectively. They were not significantly different between the two groups. The odds ratio estimated using the propensity score matching analysis was 0.842 (P=0.613). The 1- and 5-year recurrence rates were significantly lower in the LT group (9% and 21%) than in the HR group (43% and 74%) (P<0.001), and the odds ratio was 0.214 (P=0.001). In conclusion, HR should be considered a valid alternative to LDLT taking into consideration the risk for the living donor based on the results of this propensity score-matching study.

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Ternavasio-de la Vega, Hugo-Guillermo, Ana-María Mateos-Díaz, Jose-Antonio Martinez, Manel Almela, Nazaret Cobos-Trigueros, Laura Morata, Cristina De-la-Calle et al. "A Propensity Score Analysis Shows that Empirical Treatment with Linezolid Does Not Increase the Thirty-Day Mortality Rate in Patients with Gram-Negative Bacteremia". Antimicrobial Agents and Chemotherapy 58, n. 12 (8 settembre 2014): 7025–31. http://dx.doi.org/10.1128/aac.03796-14.

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ABSTRACTThe role of linezolid in empirical therapy of suspected bacteremia remains unclear. The aim of this study was to evaluate the influence of empirical use of linezolid or glycopeptides in addition to other antibiotics on the 30-day mortality rates in patients with Gram-negative bacteremia. For this purpose, 1,126 patients with Gram-negative bacteremia in the Hospital Clinic of Barcelona from 2000 to 2012 were included in this study. In order to compare the mortality rates between patients who received linezolid or glycopeptides, the propensity scores on baseline variables were used to balance the treatment groups, and both propensity score matching and propensity-adjusted logistic regression were used to compare the 30-day mortality rates between the groups. The overall 30-day mortality rate was 16.0% during the study period. Sixty-eight patients received empirical treatment with linezolid, and 1,058 received glycopeptides. The propensity score matching included 64 patients in each treatment group. After matching, the mortality rates were 14.1% (9/64) in patients who received glycopeptides and 21.9% (14/64) in those who received linezolid, and a nonsignificant association between empirical linezolid treatment and mortality rate (odds ratio [OR], 1.63; 95% confidence interval [CI], 0.69 to 3.82;P= 0.275, McNemar's test) was found. This association remained nonsignificant when variables that remained unbalanced after matching were included in a conditional logistic regression model. Further, the stratified propensity score analysis did not show any significant relationship between empirical linezolid treatment and the mortality rate after adjustment by propensity score quintiles or other variables potentially associated with mortality. In conclusion, the propensity score analysis showed that empirical treatment with linezolid compared with that with glycopeptides was not associated with 30-day mortality rates in patients with Gram-negative bacteremia.

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Abramitzky, Ran, Adeline Delavande e Luis Vasconcelos. "Marrying Up: The Role of Sex Ratio in Assortative Matching". American Economic Journal: Applied Economics 3, n. 3 (1 luglio 2011): 124–57. http://dx.doi.org/10.1257/app.3.3.124.

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We assemble a novel dataset to study the impact of male scarcity on marital assortative matching and other marriage market outcomes using the large shock that WWI caused to the number of French men. Using a difference-in-differences approach, we find that postwar in regions with higher mortality rates: men were less likely to marry women of lower social classes; men were more likely and women less likely to marry; out-of-wedlock births increased; divorce rates decreased; and the age gap decreased. These findings are consistent with men improving their position in the marriage market as they become scarcer. (JEL J12, J16, N34)

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Mcclure, Foster D. "Design And Analysis Of Qualitative Collaborative Studies: Minimum Collaborative Program". Journal of AOAC INTERNATIONAL 73, n. 6 (1 novembre 1990): 953–60. http://dx.doi.org/10.1093/jaoac/73.6.953.

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Abstract Collaborative studies Involving qualitative data are usually conducted under design constraints to fulfill the requirements for quantitative studies. The data from these qualitative studies are often analyzed In a manner that ignores the fact that collaborative studies Involve matching (I.e., each laboratory analyzes a portion of each test sample). This report presents some design considerations and analysis procedures for qualitative collaborative studies that take into account that the design Involves matching. Suggestions are offered as to the number of laboratories and test samples to use in the minimum collaborative program, and analysis procedures for outlier screening are detailed. Method performance Is assessed through such Indicators as sensitivity, specificity, false positive, and false negative rates. Methods for estimating the error of the performance indicator rates are explained, and procedures are given for estimating false positive and false negative rates for lot defect rates that may occur In practice.

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Bellotti, Ruben, Benno Cardini, Carola J. Strolz, Stefan Stättner, Rupert Oberhuber, Eva Braunwarth, Thomas Resch et al. "Single Center, Propensity Score Matching Analysis of Different Reconstruction Techniques following Pancreatoduodenectomy". Journal of Clinical Medicine 12, n. 9 (6 maggio 2023): 3318. http://dx.doi.org/10.3390/jcm12093318.

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Background: Pancreatoduodenectomy is still hampered by significant morbidity. So far, there is no universally accepted technique aimed at minimizing postoperative complications. Herein, we compare three different reconstruction techniques. Methods: This is a retrospective study of a prospectively maintained database including 283 patients operated between January 2010 and December 2020. Three reconstruction techniques were compared: (1) the Neuhaus-style telescope pancreatojejunostomy, (2) the pancreatogastrostomy, and (3) the modified Blumgart-style, duct-to-mucosa pancreatojejunostomy. The primary endpoint consisted in determining the rates of clinically relevant postoperative pancreatic fistulas (CR-POPF); the secondary endpoints included 90 days morbidity and mortality rates. A propensity score matching analysis was used. Results: Rates of CR-POPF did not differ significantly between the groups (Neuhaus-style pancreatojejunostomy 16%, pancreatogastrostomy 17%, modified Blumgart-style pancreatojejunostomy 15%), neither in the unmatched nor in the matched analysis (p = 0.993 and p = 0.901, respectively). Similarly, no significant differences could be observed with regard to major morbidity (unmatched p = 0.596, matched p = 0.188) and mortality rates (unmatched p = 0.371, matched p = 0.209) within the first 90 days following surgery. Propensity-score matching analyses revealed, however, a higher occurrence of post-pancreatectomy hemorrhage after pancreatogastrostomy (p = 0.015). Conclusion: Similar CR-POPF rates suggest no crucial role of the applied reconstruction technique. Increased incidence of intraluminal post-pancreatectomy hemorrhages following pancreatogastrostomy demands awareness for meticulous hemostasis.

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West, Brady T., Michael R. Elliott, Zeina Mneimneh, James Wagner, Andy Peytchev e Mark Trappmann. "An Examination of an Interviewer-Respondent Matching Protocol in a Longitudinal CATI Study". Journal of Survey Statistics and Methodology 8, n. 2 (12 febbraio 2019): 304–24. http://dx.doi.org/10.1093/jssam/smy028.

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Abstract This article presents results from an experimental study in Germany designed to test the effectiveness of a novel protocol for matching participants in a national panel survey with interviewers employing computer-assisted telephone interviewing (CATI) on selected sociodemographic features, including sex, age, and education. We specifically focus on the ability of the protocol to engender close matches between respondents and interviewers in terms of these features, using both theory and empirical evidence to suggest that this type of matching will improve cooperation rates in surveys employing CATI. We also focus on indicators of “success” at first contact (defined as a successful interview or establishment of an appointment for an interview) as a function of whether the matching protocol was in use on a given day and whether specific types of matches generated higher rates of success overall. We find strong evidence of the protocol effectively establishing close matches, and we also observe that matches based on education proved especially effective for rates of “success” in a panel survey that focused primarily on labor market topics. We conclude with thoughts on practical implementation of this approach in other settings and suggested directions for future work in this area.

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Megreya, Ahmed M., e Robert D. Latzman. "Individual differences in emotion regulation and face recognition". PLOS ONE 15, n. 12 (10 dicembre 2020): e0243209. http://dx.doi.org/10.1371/journal.pone.0243209.

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Face recognition ability is highly variable among neurologically intact populations. Across three experiments, this study examined for the first time associations between individual differences in a range of adaptive versus maladaptive emotion regulation strategies and face recognition. Using an immediate face-memory paradigm, in which observers had to identify a self-paced learned unfamiliar face from a 10-face target-present/ target-absent line-up, Experiment 1 (N = 42) found high levels of expressive suppression (the ongoing efforts to inhibit emotion-expressive behaviors), but not cognitive reappraisal (the cognitive re-evaluation of emotional events to change their emotional consequences), were associated with a lower level of overall face-memory accuracy and higher rates of misidentifications and false positives. Experiment 2 (N = 53) replicated these finding using a range of face-matching tasks, where observers were asked to match pairs of same-race or different-race face images taken on the same day or during different times. Once again, high levels of expressive suppression were associated with a lower level of overall face-matching performance and higher rates of false positives, but cognitive reappraisal did not correlate with any face-matching measure. Finally, Experiment 3 (N = 52) revealed that the higher use of maladaptive cognitive emotion regulation strategies, especially catastrophizing, was associated with lower levels of overall face-matching performances and higher rates of false positives. All told, the current research provides new evidence concerning the important associations between emotion and cognition.

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Okamura, Yukiyasu, Teiichi Sugiura, Takaaki Ito, Yusuke Yamamoto, Ryo Ashida e Katsuhiko Uesaka. "The Short- and Long-Term Outcomes in Elderly Patients with Hepatocellular Carcinoma after Curative Surgery: A Case-Controlled Study with Propensity Score Matching". European Surgical Research 59, n. 5-6 (2018): 380–90. http://dx.doi.org/10.1159/000494733.

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Background: With aging populations increasing in developed countries, the prevalence of elderly patients with hepatocellular carcinoma (HCC) is expected to rise. The aim of this study was to determine the short- and long-term outcomes of HCC surgery in elderly patients (≥75 years) using propensity score matching. Methods: The study group included 421 patients who underwent hepatectomy as their initial treatment with curative intent. The patients were divided into elderly (n = 111) and non-elderly (n = 310) groups. We applied propensity score matching – taking into consideration patient background, blood examination, and tumor factors – to minimize the effect of potential confounders. We then compared the results before and after the propensity matching. Results: Before propensity matching, the elderly group included significantly more patients with a high American Society of Anesthesiologists physical status (p < 0.001). In addition, they were taking antihypertensive drugs or an anticoagulant (both p < 0.001). The severe postoperative complications and the overall survival rates for these elderly patients were significantly poorer than for the non-elderly patients (p = 0.015 and p = 0.030, respectively). We then chose 70 patients from each group for whom the preoperative confounding factors were balanced and compared the two groups. The factors identified before matching (severe complications and overall survival rates) were no longer relevant, i.e. there were no significant differences between the two groups. Conclusion: Hepatectomy for HCC in elderly patients is justified.

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Takagi, Kosei, Yuzo Umeda, Ryuichi Yoshida, Daisuke Nobuoka, Takashi Kuise, Takuro Fushimi, Toshiyoshi Fujiwara e Takahito Yagi. "The Outcome of Complex Hepato-Pancreato-Biliary Surgery for Elderly Patients: A Propensity Score Matching Analysis". Digestive Surgery 36, n. 4 (26 giugno 2018): 323–30. http://dx.doi.org/10.1159/000489826.

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Background/Aims: Postoperative mortality and morbidity rates after hepato-pancreato-biliary (HPB) surgery remain high, and the number of elderly patients requiring such surgery has been increasing. This study aimed to investigate postoperative outcomes of complex HPB surgery for elderly patients. Methods: We retrospectively reviewed perioperative data of 721 patients who underwent complex HPB surgery between 2010 and 2015. The patients were divided into 2 groups: elderly (≥75 years) and non-elderly (< 75 years). Surgical outcomes of both groups were compared after propensity score-matching analysis. Subsequently, risk factors for serious postoperative morbidity were identified by multivariate analysis. Results: Before matching, the elderly group (n = 170) had more comorbidities, such as cardiovascular and renal disease, than the non-elderly group (n = 551). Matching yielded elderly (n = 170) and non-elderly groups (n = 170) with similar preoperative backgrounds. The mortality and morbidity rates did not differ significantly between the groups. In multivariate analyses, operative time (OR 1.79; p = 0.005) and blood loss (OR 1.66; p = 0.03) were identified as independent risk factors for serious postoperative morbidity, whereas older age did not have a predictive impact (OR 1.16; p = 0.52). Conclusions: Although elderly patients had more comorbidities and higher incidences of postoperative mortality and several complications before matching, their postoperative outcomes were equivalent to those of non-elderly patients after matching.

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Goodie, Adam S., e Edmund Fantino. "BASE RATES VERSUS SAMPLE ACCURACY: COMPETITION FOR CONTROL IN HUMAN MATCHING TO SAMPLE". Journal of the Experimental Analysis of Behavior 71, n. 2 (marzo 1999): 155–69. http://dx.doi.org/10.1901/jeab.1999.71-155.

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Kandilov, Ivan, e Tomislav Vukina. "SALARIES OR PIECE RATES: ON THE ENDOGENOUS MATCHING OF HARVEST WORKERS AND CROPS". Economic Inquiry 54, n. 1 (12 giugno 2015): 76–99. http://dx.doi.org/10.1111/ecin.12231.

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