Partonen T, Haukka J, Pirkola S, Isometsä E, Lönnqvist J
Department of Mental Health and Alcohol Research, National Public Health Institute, Helsinki, Finland.
Acta Psychiatr Scand. 2004 Feb;109(2):110-5. doi: 10.1046/j.0001-690x.2003.00226.x.
Physical time-givers may have a modifying effect on the time patterns of death from suicide.
Data on a total of 1397 suicides in Finland over a year were collected using the method of psychological autopsy. We linked versatile information on each individual to meteorological data adjusted for local weather conditions, and to the universal astronomic data.
The number of suicides with seasonal mismatch was greater than the expected in the northernmost region of the country (P = 0.03). The northern location was the most significant predictor of such suicides (P = 0.001). They were associated with the changes in ambient temperature during the preceding day (P < 0.00001), the changes to colder preceding suicides in the spring.
Our findings show that mismatch between the changes in ambient temperature and those in the length of day may precede death from suicide in some individuals.
自然时间因素可能会对自杀死亡的时间模式产生调节作用。
采用心理解剖法收集了芬兰一年内总计1397例自杀案例的数据。我们将每个个体的多方面信息与根据当地天气条件调整后的气象数据以及通用天文数据相联系。
季节性不匹配的自杀案例数量在该国最北部地区多于预期（P = 0.03）。北部地区是此类自杀案例最显著的预测因素（P = 0.001）。它们与前一天环境温度的变化相关（P < 0.00001），春季自杀案例增多之前环境温度变冷。
我们的研究结果表明，环境温度变化与白昼时长变化之间的不匹配可能在某些个体自杀死亡之前出现。
