Lewis contends that the previously demonstrated finding of seasonality of schizophrenic births is a statistical artifact due to the age-incidence effect. If Lewis is correct, then (1) January should have the highest schizophrenic birthrate, (2) December should have the lowest schizophrenic birthrate, (3) the Southern Hemisphere should show the same pattern as the Northern Hemisphere, and (4) the age-incidence effect should be more marked in younger age cohorts. None of these findings have been borne out by studies to date. It is concluded that the seasonality of schizophrenic birthrates is a replicable finding, and should be considered one of the more intriguing clues to the etiology of this disease.
Copyright (C) 1990, Maryland Psychiatric Research Center
In order to set up a list of libraries that you have access to,
you must first login
or sign up.
Then set up a personal list of libraries from your profile page by
clicking on your user name at the top right of any screen.