The British Journal of Psychiatry 132: 155-158 (1978)
© 1978 The Royal College of Psychiatrists
Variations in the seasonal distribution of births of psychotic patients in England and Wales
EH Hare
The quarterly distribution of births of patients born in England and Wales
1921-60 and first admitted in 1970-75 was examined by decade of birth and
by age at year of admission. For patients with schizophrenia and affective
psychosis, the distribution varied: in the early decade (1921-30), and for
older patients (45-54 years) the proportion of births in the fourth quarter
of the year was high, compared with expectation from live births in the
general population; but it became lower in succeeding decades and for
younger age groups. No comparable change occurred for births of patients
with neurosis or personality disorder.