Epidemiologic study in a real-world analysis of patients with treatment for psoriasis in the French national health insurance database.

The prevalence of psoriasis we found was lower than in other studies. It was probably underestimated because we identified only patients with treatment for psoriasis. Our results concerning comorbidities associated with psoriasis patients requiring systemic treatment were similar to those from other published studies using other data sources, highlighting our ability to catch moderate-to-severe psoriasis. This study highlights the usefulness and reliability of the use of insurance databases in studies, because they allow for a better application to the general population.