Maes M, De Meyer F, Thompson P, Peeters D, Cosyns P
Department of Psychiatry, University Hospitals of Cleveland, Ohio 44106.
Acta Psychiatr Scand. 1994 Nov;90(5):391-6. doi: 10.1111/j.1600-0447.1994.tb01612.x.
To investigate whether violent and nonviolent suicide and homicide are related to atmospheric or geomagnetic activity, we investigated the relationships between weekly number of suicides or homicides for all Belgium for the period 1979-1987, and ambient temperature, relative humidity, air pressure, hours of sunlight and precipitation per day, wind speed and geomagnetic index. The occurrence of violent suicide was significantly and positively related to ambient temperature, sunlight duration, an increase in temperature over the few past weeks, and negatively to relative humidity. Higher ambient temperature and an increase in air temperature over the few past weeks were the most significant climatic predictors of violent suicide rate. A highly significant common annual rhythm with a common acrophase of 190 degrees was detected in violent suicide rate, ambient temperature and sunlight duration. No significant time-relationships between nonviolent suicide or homicide and any of the weather variables were found. It is concluded that i) violent suicide may be related to short-term fluctuations in the weather and in particular to temperature; and ii) the annual rhythm in violent suicide may be synchronized by the annual rhythms in ambient temperature and light-dark span.
为了研究暴力自杀和非暴力自杀及杀人行为是否与大气或地磁活动有关，我们调查了1979年至1987年期间比利时全国每周自杀或杀人事件的数量与环境温度、相对湿度、气压、每日日照时长和降水量、风速以及地磁指数之间的关系。暴力自杀事件的发生与环境温度、日照时长、过去几周内的温度升高呈显著正相关，与相对湿度呈负相关。较高的环境温度以及过去几周内气温的升高是暴力自杀率最显著的气候预测因素。在暴力自杀率、环境温度和日照时长中检测到一个高度显著的共同年度节律，其共同顶点相位为190度。未发现非暴力自杀或杀人行为与任何天气变量之间存在显著的时间关系。研究得出结论：i）暴力自杀可能与天气的短期波动有关，特别是与温度有关；ii）暴力自杀的年度节律可能与环境温度和明暗周期的年度节律同步。
