Abstract
This systematic review registered in PROSPERO (CRD42021225296) aimed to describe the use of the French national health insurance information system, which covers the entire French population (67million inhabitants), for research in the field of mental health. Three electronic databases and a journal hand-search identified 15265 articles from January 1, 2003 (year of creation of the database) to October 31, 2020. Studies of any design were eligible for inclusion provided that they (i) made use of at least one component of the French health insurance database and (ii) focused on a topic in near and far connection with the field of mental health in France. Database used, design and methods, study period, population, key findings, and type of use for medical research were described. A total of 152studies were included in the review analysis. There was an increase in the number of published articles over time throughout the studied period. Studies focusing on adults (n=139) largely outnumbered those focusing on children and adolescents (n=11). Pharmacoepidemiological studies were by far the most frequent (n=123), followed by methodological studies (n=23), epidemiological studies (n=17), and health economics studies (n=3). The most studied psychotropic drugs were antidepressants (n=27), anxiolytics (n=27), and opioids (n=25) while fewer studies focused on methylphenidate (n=6) and on mood stabilizers (n=5). Few studies specifically focused on psychiatric disorders, mainly depression (n=4), suicide (n=4), and psychotic disorders (n=3). This systematic review highlighted a relatively poor exploitation of the Système national des données de santé database in the field of psychiatric research with regard to the great possibilities it offers, with a clear lag in certain fields such as epidemiological or health economics studies and in specific populations, in particular children and adolescents.
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