Walter S D
Br J Psychiatry. 1977 Oct;131:345-50. doi: 10.1192/bjp.131.4.345.
Some recently published data on the seasonal incidence of mania are re-examined. The reanalysis confirms a strong, seasonal trend in females, but also demonstrates a similar trend in males; the latter results is at variance with an earlier finding which showed no seasonal pattern in males. A simple harmonic curve would describe the data extremely well in both sexes, and the parameters of these curves (the amplitude of variation and the time of maximum incidence) are very close for males and females.
对一些最近发表的关于躁狂症季节性发病率的数据进行了重新审视。重新分析证实了女性中存在强烈的季节性趋势，但也表明男性中存在类似趋势；后一结果与早期一项显示男性不存在季节性模式的研究结果不一致。一条简单的谐波曲线能很好地描述两性的数据，并且这些曲线的参数（变化幅度和发病率最高的时间）在男性和女性中非常接近。
