Gender and obstetric factors in the determination of the age of onset of schizophrenia in a Nigerian cohort.

The importance of gender and obstetric factors as predictors of the age of onset of schizophrenia is debatable. Unfortunately, there is a significant dearth of studies in developing countries such as Nigeria. This study involved a survey of patients with schizophrenia (n = 1,445; N = 2,393), from March 2014 to March 2016, from a psychiatric hospital in southwest Nigeria.