Parker G, Neilson M
Br J Psychiatry. 1976 Oct;129:355-61. doi: 10.1192/bjp.129.4.355.
Studies on the relationship between season of birth and mental disorder have been substantially confined to northern hemisphere regions. Such studies have generally found an excess of winter births of schizophrenics, and variably an excess of winter births of manic-depressive and mentally retarded patients. In the present study information on sex, diagnosis and date of birth was obtained on all 20,358 patients first admitted to psychiatric facilities in New South Wales between July 1970 and June 1974 and born in New South Wales. The collective 1962-71 monthly live-births for New South Wales were used as a control. A significant winter excess was found for the female schizophrenic group, while a significant spring excess was found for neurotic patients, most marked in those with anxiety neurosis. It is hypothesized that the relationship between schizophrenia and winter birth is consequent upon a greater sensitivity of schizophrenics to those physiological factors which determine conception in the general population.
关于出生季节与精神障碍之间关系的研究基本上局限于北半球地区。这类研究通常发现精神分裂症患者冬季出生的人数过多，躁狂抑郁症患者和智力迟钝患者的冬季出生人数也时有过多。在本研究中，获取了1970年7月至1974年6月期间首次入住新南威尔士州精神病院且出生于新南威尔士州的所有20358名患者的性别、诊断和出生日期信息。新南威尔士州1962 - 1971年的集体月度活产数据用作对照。发现女性精神分裂症患者组冬季出生人数显著过多，而神经症患者春季出生人数显著过多，在焦虑性神经症患者中最为明显。据推测，精神分裂症与冬季出生之间的关系是由于精神分裂症患者对决定一般人群受孕的生理因素更为敏感所致。
