New projections and challenges for etiologic research in psychiatric epidemiology

Epidemiological demonstration of a cause-effect relationship is made on the basis of judgment and measurement, used to check several criteria: temporality, strength of an association, its biological gradient, specificity, consistency, biological plausibility, coherence with prevalent knowledge, analogy and experimental proof. Such a demonstration, based on circumstantial several qualitative pre-requisites. Such pre-requisites being universal, …