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05.12.2018 | DATA RESOURCES

FranceCoag: a 22-year prospective follow-up of the national French cohort of patients with inherited bleeding disorders

Zeitschrift:
European Journal of Epidemiology
Autoren:
Alexandra Doncarli, Virginie Demiguel, Irina Guseva Canu, Véronique Goulet, Sophie Bayart, Thierry Calvez, Sabine Castet, Vincent Dalibard, Yohan Demay, Birgit Frotscher, Jenny Goudemand, Thierry Lambert, Vanessa Milien, Caroline Oudot, Thomas Sannié, Hervé Chambost, for the FranceCoag Network
Wichtige Hinweise
Alexandra Doncarli and Virginie Demiguel have contributed equally to this work.

Abstract

FranceCoag is an ongoing open prospective multicentre cohort project aimed at improving epidemiological knowledge about inherited bleeding disorders in France. The main objective of this article was to evaluate the project’s progress as of the 30th December 2016. Between 1994 and this date, of the 10,047 patients included in the study, 384 (3.8%) were reported by clinicians to have died and 159 (1.6%) to be lost to follow-up. Among the remaining 9504 patients still being followed up, 5748 (60.5%) had haemophilia A, 1300 (13.7%) haemophilia B, 1980 (20.8%) von Willebrand Disease while 476 (5.0%) had another clotting factor deficiency (Factor I, II, V, combined V and VIII, VII, X, XI and XIII). The median age of the population was 32 years (Inter-quartile range (IQR) 18–50 years) at data extraction on December 30th, 2016. The subgroup of children (i.e., < 18 years old) with severe haemophilia and comprehensive information available since the first exposure to treatment was identified as the PUPs (Previously Untreated Patients) cohort. Data for the 643 children included in the PUPs’ cohort had been collected since their birth. Follow-up data were collected by the clinicians in haemophilia treatment centres (HTC) every 12.9 months on median (IQR 11.4–21.3). In the PUPS cohort, data were updated every 6.2 months on median (IQR 3.7–11.7). A unique patient number assigned at study inclusion was kept at individual HTC by participating clinicians. The data collected included demographic, clinical, therapeutic and biological items on standard electronic forms. As of December 30th 2016, a plasma and serum samples was available for 2581 patients (27.1%).

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