Epidemiology was in its infancy during that time period, I wouldn't compare or analyze those rates too closely. This is during the time of Freudian hogwash, bef

Epidemiology was in its infancy during that time period, I wouldn't compare or analyze those rates too closely. This is during the time of Freudian hogwash, before DSM, before knowledge of genetics or any current understanding of neurophysiology. Cultural awareness of psychology has also changed vastly, and broader awareness leads to broader diagnosis in many disorders.