Дисертації з теми "Multicentrique"
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Meyer, Patricia Valty Jean. "Etude descriptive multicentrique transversale." Créteil : Université de Paris-Val-de-Marne, 2005. http://doxa.scd.univ-paris12.fr:80/theses/th0233707.pdf.
VAN, ELSLANDE LUC. "La reticulohistiocytose multicentrique : a propos d'un cas avec etude immuno-histochimique particuliere et revue de la litterature." Nice, 1992. http://www.theses.fr/1992NICE6590.
Moreau, Éric. "La reticulo-histiocytose multicentrique : a propos de deux observations." Nancy 1, 1990. http://www.theses.fr/1990NAN11298.
Lemelle, Jean-Louis. "Spina bifida, continence et qualité de vie : étude multicentrique." Nancy 1, 2006. http://www.theses.fr/2006NAN11313.
Eirich, Achim. "La pathologie iatrogène en réanimation polyvalente : Etude prospective multicentrique." Saint-Etienne, 1989. http://www.theses.fr/1989STET6228.
HAMAR, LANGDORPH ANNE-GABRIELLE. "Forme digestive des purpuras rhumatoides : etude retrospective et multicentrique." Aix-Marseille 2, 1994. http://www.theses.fr/1994AIX20014.
DURIEUX, HIRET SYLVIE. "L'immunite antitetanique en france : a propos d'une tentative d'etude multicentrique." Clermont-Ferrand 1, 1989. http://www.theses.fr/1989CLF13065.
Marazanof, Marc. "Anévrysmes du septum interauriculaire en échographie transœsophagienne : étude multicentrique française." Bordeaux 2, 1993. http://www.theses.fr/1993BOR23014.
Piard, Juliette. "Déficience intellectuelle : identification de nouveaux gènes par une approche multicentrique." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCE005.
Intellectual disability (ID) impacts 1 to 3% of the general population with an excess of affected males. This condition is characterized by an extreme clinical and genetic heterogeneity making the deciphering of its causes more complex. The technological revolution that took place in the study of the genome over the last two decades has provided a useful tool for identification of new genetic entities. This is particularly true for chromosomal micro-array analysis since early 2000s and for next generation sequencing since 2011. We took advantage of this by identifying the molecular basis of three singular conditions. We applied a structured methodology and created a network of collaborations to define or confirm these new ID syndromes. 1. Whole exome sequencing alongside with array-CGH 2.Identification of a candidate gene sequence alteration in the index case and other affected patients of the family 3.Constitution and study of a replication cohort 4.Biochemical studies and/or animal models in order to support the assumption of causalityBased on this research strategy, we were able to complete the following projects : Discovery of a syndromic form of autosomal recessive ID associated with cervical spine defects due to bi-allelic CDK10 mutations. Identification of an ATAD1-related profound and lethal autosomal recessive encephalopathy with stiffness and distal arthrogryposis. Characterization of a FRMPD4-related X-linked non-syndromic ID
Bourseau, Catherine. "Pustulose exanthématique aiguë généralisée : étude multicentrique de 63 cas français." Bordeaux 2, 1990. http://www.theses.fr/1990BOR23100.
Astar, Blanchard Isabelle. "Essai dépakine - tegretol dans les épilepsies partielles : étude multicentrique française." Bordeaux 2, 1988. http://www.theses.fr/1988BOR23013.
Mijoule, Guillaume. "Modélisation du processus d'inclusion de patients dans un essai clinique multicentrique." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2075/.
In this work, we investigate the statistical modeling of the patients' inclusion process in phase III of a multicentric clinical trial. We introduce empirical bayesian models similar to the Gamma-Poisson process that take into account uncertainty in the opening dates of centers or a time-dependent rate of inclusion. We show how to perform estimation and prediction based on an on-going study at some interim time. We extend these models to account for patients drop-out during screening process. Finally, a stochastic cost model is proposed
Bandon, Daniel. "Les soins dentaires des enfants sous anesthésie générale : étude clinique multicentrique." Aix-Marseille 2, 2003. http://www.theses.fr/2003AIX21602.
Casey, Romain. "Etude cas-témoin multicentrique des facteurs de risque des hémopathies lymphoïdes." Dijon, 2006. http://www.theses.fr/2006DIJOMU02.
A case-control study was conducted in three French areas to determine risk factors favouring the increase of incidence of non-Hodgkin’s lymphomas observed this few decades. A detailed questionnaire was submitted to 298 cases and 276 hospitalised controls. Blood sample were collected. First we analysed alcohol and tobacco consumption, use of hair dyes and sun and radiographies exposure; then, the influence of allergic, infectious and non infectious diseases, drugs like vaccines, health and animals contacts during infancy. These results are discussed in the framework of the hygienist hypothesis and of the TH1/TH2 paradigm. We analysed the influence of familial cancers on the occurred of lymphoid neoplasms. With the data of immunophentype, we can describe themarkers of cellular proliferation and apoptosis of the lymphoid neoplasms
Sentenac, Virginie de. "La lithiase cystinique : diagnostic, traitements, étude multicentrique sur la lithiase cystinique." Paris 5, 1991. http://www.theses.fr/1991PA05P105.
Amzallag, Julien Guigui Pierre. "Complications des ostéotomies transpédiculaires étude multicentrique à propos de 402 cas /." Créteil : Université de Paris-Val-de-Marne, 2009. http://doxa.scd.univ-paris12.fr:80/theses/th0510900.pdf.
Youssef, Nazem. "Cesariennes : voies d'abord : retentissement maternel et neo-natal, resultats d'une etude multicentrique." Amiens, 1988. http://www.theses.fr/1988AMIEM007.
Aunoble, Stéphane. "Prise en charge des disjonctions sterno-claviculaires : étude multicentrique de 82 cas." Bordeaux 2, 1999. http://www.theses.fr/1999BOR23054.
Schmit, Anne-Laure Le Conte Philippe. "Analyse des décès d'origine cardiovasculaire aux urgences étude prospective multicentrique SU-DALISA /." [S.l.] : [s.n.], 2006. http://theses.univ-nantes.fr/thesemed/MEDschmit.pdf.
Roca, Vincent. "Harmonisation multicentrique d'images IRM du cerveau avec des modèles génératifs non-supervisés." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILS060.
Magnetic resonance imaging (MRI) enables the acquisition of brain images used in the study of neurologic and psychiatric diseases. MR images are more and more used in statistical studies to identify biomarkers and for predictive models. To improve statistical power, these studies sometimes pool data acquired with different machines, which may introduce technical variability and bias into the analysis of biological variabilities. In the last few years, harmonization methods have been proposed to limit the impact of these variabilities. Many studies have notably worked on generative models based on unsupervised deep learning. The doctoral research is within the context of these models, which constitute a promising but still exploratory research field. In the first part of this manuscript, a review of the prospective harmonization methods is proposed. Different methods consisting in normalization applied at the image level, domain translation or style transfer are described to understand their respective issues, with a special focus on unsupervised generative models. The second part is about the methods for evaluation of retrospective harmonization. A review of these methods is first conducted. The most common rely on “traveling” subjects to assume ground truths for harmonization. The review also presents evaluations employed in the absence of such subjects: study of inter-domain differences, biological patterns and performances of predictive models. Experiments showing limits of some approaches commonly employed and important points to consider for their use are then proposed. The third part presents a new model for harmonization of brain MR images based on a CycleGAN architecture. In contrast with the previous works, the model is three-dimensional and processes full volumes. MR images from six datasets that vary in terms of acquisition parameters and age distributions are used to test the method. Analyses of intensity distributions, brain volumes, image quality metrics and radiomic features show an efficient homogenisation between the different sites of the study. Next, the conservation and the reinforcement of biological patterns are demonstrated with an analysis of the evolution of gray-matter volume estimations with age, experiments of age prediction, ratings of radiologic patterns in the images and a supervised evaluation with a traveling subject dataset. The fourth part also presents an original harmonization method with major updates of the first one in order to establish a “universal” generator able to harmonize images without knowing their domain of origin. After a training with data acquired on eleven MRI scanners, experiments on images from sites not seen during the training show a reinforcement of brain patterns relative to age and Alzheimer after harmonization. Moreover, comparisons with other intensity harmonization approaches suggest that the model is more efficient and more robust to different tasks subsequent to harmonization. These different works are a significant contribution to the domain of retrospective harmonization of brain MR images. The bibliographic documentations indeed provide a methodological knowledge base for the future studies in this domain, whether for harmonization in itself or for validation. In addition, the two developed models are two robust tools publicly available that may be integrated in future MRI multicenter studies
Charles, Jean-Marc. "Strategie diagnostique de la maladie thromboembolique veineuse : analyse preliminaire d'une etude multicentrique regionale." Nancy 1, 1993. http://www.theses.fr/1993NAN11206.
Carle, Jean-Paul. "Prophylaxie des ruptures de varices oesophagiennes par sclérothérapie per-endoscopique : étude multicentrique randomisée." Montpellier 1, 1988. http://www.theses.fr/1988MON11270.
Chevalier, Luc. "Les complications de la coeliochirurgie en gynecologie : etude multicentrique de 1987 a 1991." Lille 2, 1992. http://www.theses.fr/1992LIL2M193.
Groleau, Nicolas Floch Hervé. "Etude prospective multicentrique française sur les positions en neurochirurgie de la fosse postérieure." [S.l.] : [s.n.], 2005. http://theses.univ-nantes.fr/thesemed/SPEgroleau.pdf.
MANRESA, GUERLOU CLAUDINE. "Evaluation multicentrique d'un systeme telematique d'education nutritionnelle : experience de l'hopital saint-louis, paris." Toulouse 3, 1992. http://www.theses.fr/1992TOU31074.
Bertout, Sébastien. "Polymophisme génétique de souche d'Aspergillus fumigatus isolées d'aspergilloses pulmonaires au cours d'une étude multicentrique." Montpellier 1, 2000. http://www.theses.fr/2000MON13512.
Alahyane, Jamila. "Traitement laparoscopique des cancers du colon : étude prospective randomisée et multicentrique laparotomie versus laparoscopie." Montpellier 1, 2001. http://www.theses.fr/2001MON11032.
Porte, Christian. "Le bilan etiologique des avortements spontanes precoces iteratifs : a propos d'une enquete multicentrique francaise." Nancy 1, 1988. http://www.theses.fr/1988NAN11193.
NAOURI, MICHELE. "La corticotherapie peri-operatoire des plasties tubaires par coelio-chirurgie : etude prospective multicentrique randomisee." Lille 2, 1990. http://www.theses.fr/1990LIL2M303.
De, Lassat de Pressigny Guénaëlle Ramboz Gérald. "Analyse de la prise en charge des accidents vasculaires cérébraux ischémiques chez la personne âgée de moins de 80 ans : à propos d'une étude descriptive multicentrique interdépartementale à propos d'une étude descriptive multicentrique interdépartementale /." [S.l] : [s.n], 2003. http://www.scd.uhp-nancy.fr/docnum/SCDMED_T_2003_LASSAT_DE_PRESSIGNY_GUENAELLE.pdf.
Nasca-Berton, Pascale, and Vincent Scherr. "Evenements gyneco-obstetricaux pathologiques chez les meres d'enfants atteints de psychose precoce : etude epidemiologique multicentrique." Reims, 1987. http://www.theses.fr/1987REIMM099.
Lemelle, Jean-Louis. "L'enterocolite ulcero-necrosante du nouveau-ne : rapport d'une etude multicentrique a propos de 331 cas." Nancy 1, 1992. http://www.theses.fr/1992NAN11220.
Renaud, Dominique. "Intoxications aigues par le diltiazem : etude multicentrique des centres anti-poisons francais et serie personnelle." Nancy 1, 1991. https://www.dawsonera.com/abstract/9782296513792.
Hello, Muriel Barbarot Sébastien. "Traitement par thalidomide des aphtoses buccales sévères récidivantes en situation réelle analyse de cohorte multicentrique /." [S.l.] : [s.n.], 2008. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=49416.
Minois, Nathan. "Etude de consistance et applications du modèle Poisson-gamma : modélisation d'une dynamique de recrutement multicentrique." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30396/document.
A clinical trial is a biomedical research which aims to consolidate and improve the biological and medical knowledges. The number of patients required il the minimal number of patients to include in the trial in order to insure a given statistical power of a predefined test. The constitution of this patients' database is one of the fundamental issues of a clinical trial. To do so several investigation centres are opened. The duration between the first opening of a centre and the last recruitment of the needed number of patients is called the recruitemtn duration that we aim to model. The fisrt model goes back 50 years ago with the work of Lee, Williford et al. and Morgan with the idea to model the recruitment dynamic using Poisson processes. One problem emerge, that is the lack of caracterisation of the variabliity of recruitment between centers that is mixed with the mean of the recruitment rates. The most effective model is called the Poisson-gamma model which is based on Poisson processes with random rates (Cox process) with gamma distribution. This model is at the very heart of this project. Different objectives have motivated the realisation of this thesis. First of all the validity of the Poisson-gamma model is established asymptotically. A simulation study that we made permits to give precise informations on the model validity in specific cases (function of the number of centers, the recruitement duration and the mean rates). By studying database, one can observe that there can be breaks during the recruitment dynamic. A question that arise is : How and must we take into account this phenomenon for the prediction of the recruitment duration. The study made tends to show that it is not necessary to take them into account when they are random but their law is stable in time. It also veered around to measure the impact of these breaks on the estimations of the model, that do not impact its validity under some stability hypothesis. An other issue inherent to a patient recruitment dynamic is the phenomenon of screening failure. An empirical Bayesian technique analogue to the one of the recruitment process is used to model the screening failure issue. This hierarchical Bayesian model permit to estimate the duartion of recruitment with screening failure consideration as weel as the probability to drop out from the study using the data at some interim time of analysis, giving predictions on the randomisation dynamic. The recruitment dynamic can be studied in many different ways than just the duration of recruitment. These fundamental aspects coupled with the Poisson-gamma model give relevant indicators for the study follow-up. Multiples applications in this sense are computed. It is therefore possible to adjust the number of centers according to predefined objectives, to model the drug's supply chain per region or center and to predict the effect of the randomisation on the power of the test's study. It also allows to model the folow-up period of the patients by means of transversal or longitudinal methods, that can serve to adjust the number of patients if too many quit during the foloww-up period, or to stop the study if dangerous side effects or no effects are observed on interim data. The problematic of the recruitment dynamic can also be coupled with the dynamic of the study itself when it is longitudinal. The independance between these two processes allows easy estimations of the different parameters. The result is a global model of the patient pathway in the trail. Two key examples of such situations are survival data - the model permit to estimate the duration of the trail when the stopping criterion is the number of events observed, and the Markov model - the model permit to estimate the number of patients in a certain state for a given duartion of analysis
PLEGAT, SERGE. "Profil clinique des formes familiales de maladie de crohn : etude descriptive multicentrique de 47 familles." Lille 2, 1994. http://www.theses.fr/1994LIL2M269.
Lorente, Christine. "Prise de médicaments pendant la grossesse et survenue de malformations congénitales : bilan d'une enquête multicentrique européenne." Paris 5, 1999. http://www.theses.fr/1999PA05P036.
Delcourt, Cécile. "Complications degeneratives du diabete : prevalence et associations dans un echantillon multicentrique de diabetiques de type 2." Paris 11, 1994. http://www.theses.fr/1994PA11T040.
De, Vincenzi Isabelle. "Transmission hétérosexuelle du virus de l'immunodéficience humaine de type 1 (VIH-1) : une étude multicentrique européenne." Paris 11, 1995. http://www.theses.fr/1995PA11T004.
Béguier, Éric. "Intérêt de l'amplification génique dans le diagnostic des infections à entérovirus : évaluation multicentrique et utilisation en routine." Bordeaux 2, 1997. http://www.theses.fr/1997BOR2P019.
Bardeau, Jean-Jacques. "Une structure multicentrique originale : le SAMU 03 : présentation et bilan d' une première année d' activité (1986)." Clermont-Ferrand 1, 1987. http://www.theses.fr/1987CLF13029.
Assy, Coralie. "L'intensité d'utilisation des ressources pour les hospitalisations suite à un traumatisme cranio-cérébral : étude de cohorte multicentrique." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/35010.
Within universal health systems, the lack of information regarding resource utilisation for acute traumatic brain injury (TBI) care impedes efforts to improve the quality and efficiency of care in this patient population. To address this knowledge gap, a multicenter retrospective cohort study was conducted in the province of Quebec. The objectives of this study were to evaluate the inter-hospital variation in resource use for TBI admissions, identify patient-level determinants of resource use intensity and evaluate the association between hospital resource use and clinical outcomes for TBI admissions. We included all patients aged 16 and over hospitalized following a TBI in any of 57 the adult trauma centers in Quebec between 2013 and 2016. Overall, the inter-hospital variation in resource use was statically significant. However, when we stratified by activity centers, the operating room and para-clinical services had the highest inter-hospital variations. Inter-hospital variation was greater for patients under 65 years of age and those with severe TBI. Comorbidities, anatomical injury severity, and a transfer to long-term center care following hospital discharge were identified as determinants of high resource use intensity. On a hospital level, high resource use was associated with a low incidence of mortality but a high incidence of complications. This study advances knowledge on resource use in TBI populations. However, further studies should be conducted to determine the factors responsible for inter-hospital variations in resource use including process of care, physician characteristics and trauma center structure.
Patton, Marie-Pier. "Variation inter-hospitalière de l'intensité des soins chirurgicaux pour les admissions en traumatologie : étude de cohorte multicentrique." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/67731.
In trauma, guidelines are moving away from surgical management. However, there is a knowledge gap on the influence of these recommendations on clinical practice. We aimed to evaluate the inter-hospital variation in surgical intensity in adults admitted for severe injury to any of the 57 trauma centres in the province of Quebec from 2007 to 2016, identify the determinants of surgical intensity and evaluate the correlation between hospital surgical intensity and clinical outcomes (mortality and complications). Surgical intensity was quantified with the number of surgical procedures. We stratified all analyses by the type of injury; orthopaedic (n = 17,001), neurological (n = 12,888) and thoracoabdominal (n = 9,816). Poisson multilevel models were used. We observed moderate inter-hospital variation in the orthopaedic population with an intra-class correlation coefficient (ICC) of 14.4% (12.1-20.4) and low for thoracoabdominal (ICC: 2.7% [1.7-3.1]) and neurological (ICC: 0.8% [0.8-1.2]) populations. Surgical intensity decreased with age for all groups (p < 0.01) and, for the orthopaedic population, with trauma centre designation level (IV vs I RR = 0.31[0.17-0.57]). During the study period, surgical intensity decreased for neurological (RR = 0.76 [0.68-0.84]) and thoracoabdominal (RR = 0.74 [0.63-0.87]) populations. Negative correlations were observed between hospital surgical intensity and mortality for thoracoabdominal populations (Pearson correlation coefficient [r] = -0.32, p = 0.02) and neurological populations (r = -0.63, p = 0.09) and with complications for the neurological population (r = -0.71, p = 0.05), while complications were positively correlated with surgical intensity for the orthopaedic population (r = 0.35, p =0.008). The variations that we observed suggest a lack of standardization of surgical trauma care. A better understanding of the underlying causes of these associations is needed to improve the quality of trauma care.
Petit, François-Xavier Chabot Jean-François. "HYPOVENTILATION ALVEOLAIRE ET OBESITE PRESENTATION ET ETUDE DE FAISABILITE D'UN PROTOCOLE DE RECHERCHE DIAGNOSTIQUE ET THERAPEUTIQUE MULTICENTRIQUE /." [S.l.] : [s.n.], 2000. http://www.scd.uhp-nancy.fr/docnum/SCDMED_T_2000_PETIT_FRANCOIS_XAVIER.pdf.
Roussel, Etienne. "Prise en charge des maladies trophoblastiques gestationnelles dans la région Centre entre 1997 et 2001 : Etude rétrospective multicentrique." Tours, 2004. http://www.theses.fr/2004TOUR3062.
Mathieu, Flavie. "Recherche des déterminants génétiques de la réponse spécifique aux allergènes, phénotype associé à l'asthme, dans l'étude multicentrique EGEA." Paris 11, 2002. http://www.theses.fr/2002PA11T030.
STAMM, BATAILLY CATHERINE. "Sevrage de la corticotherapie systemique dans le pemphigus : a propos d'une etude multicentrique nationale portant sur 270 cas." Lyon 1, 1994. http://www.theses.fr/1994LYO1M308.
Boulanger-Deschamps, Sophie. "Etude descriptive des cas et temoins du nord inclus dans une enquete multicentrique sur les cancers du larynx." Lille 2, 1990. http://www.theses.fr/1990LIL2M310.
LAIRE, TACHE EMMANUELLE. "Echanges plasmatiques et syndrome de guillain-barre : experience remoise dans le cadre de l'etude multicentrique francaise prn 85." Reims, 1992. http://www.theses.fr/1992REIMM056.
DESVIGNE, NOULET MARIE-CHRISTINE. "La synovite villo-nodulaire pigmentee de la hanche : resultats d'une enquete nationale multicentrique, a propos de 56 observations." Lille 2, 1991. http://www.theses.fr/1991LIL2M317.