The classic model is, you get a bunch of studies where you know that they've been conducted and completed, and then you go and see if they've been published anywhere in the academic literature. So this took all of the trials that had ever been conducted on antidepressants that were approved over a 15-year period by the FDA.
El modelo clásico es: tienes un montón de estudios que sabes que efectivamente se realizaron y se completaron y luego buscas si fueron publicados en algún lugar en la literatura académica. Esto abarcó todos los ensayos que se realizaron acerca de los antidepresivos y que se aprobaron en un período de 15 años por la FDA.