Seasonal variation in suicide occurrence in Finland.

  title={Seasonal variation in suicide occurrence in Finland.},
  author={Helin{\"a} Hakko and Pirkko R{\"a}s{\"a}nen and Jari Tiihonen},
  journal={Acta psychiatrica Scandinavica},
  volume={98 2},
The aim of this study was to investigate the age-, gender- and suicide method-related seasonality of suicide occurrence by using the largest database examined so far (n=21,279). The Chi-square test for multinomials was used as the overall measure of deviation. The monthly observed and expected numbers of suicides were calculated and classified by year, month, gender, age groups and suicide methods. To identify the statistically significant peak and trough months, the ratio of observed numbers… CONTINUE READING

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