Eastwood M R, Stiasny S
Arch Gen Psychiatry. 1978 Jun;35(6):769-71. doi: 10.1001/archpsyc.1978.01770300111012.
Psychiatric disorder has been considered to have seasonal variation for a long time. The studies to date have suffered frequently from small samples and imprecise terminology, and the results have been inconclusive. This study has attempted to overcome these difficulties by examining hospital admissions to all facilities in the province of Ontario for a six-year period, with each year carefully divided into seasons. Statistically significant seasonal variation, with peaks in the spring and fall, was found overall for neurotic and endogenous depression. Alcoholism also showed a spring peak. No other diagnoses, overall, showed seasonality, although personality disorders, drug addictions, and transient situational disturbances exhibited trends similar to neurotic depression for certain age and sex groups. The findings are discussed in terms of their clinical and research significance.
长期以来，精神疾病一直被认为存在季节性变化。迄今为止的研究常常存在样本量小和术语不精确的问题，结果也尚无定论。本研究试图通过检查安大略省所有医疗机构六年期间的住院情况来克服这些困难，每年都仔细划分为不同季节。总体而言，发现神经症性抑郁症和内源性抑郁症存在具有统计学意义的季节性变化，高峰出现在春季和秋季。酒精中毒也在春季出现高峰。总体而言，没有其他诊断显示出季节性，尽管人格障碍、药物成瘾和短暂性情境障碍在某些年龄和性别组中表现出与神经症性抑郁症相似的趋势。本文从临床和研究意义方面对研究结果进行了讨论。
