List of original studies

This thesis is based on the following original articles:

I     Hakko H, Räsänen P & Tiihonen J (1998) Seasonal variation in suicide occurrence in Finland. Acta Psychiatr Scand 98: 92-97.

II    Hakko H, Räsänen P & Tiihonen J (1998) Secular trends in the rates and seasonality of violent and nonviolent suicide occurrences in Finland during 1980-95. J Aff Disord 50: 49-54.

III   Tiihonen J, Räsänen P & Hakko H (1997) Seasonal variation in the occurrence of homicide in Finland. Am J Psychiatry 154: 1711-1714.

IV  Hakko H, Räsänen P & Tiihonen J (1998) Increasing homicide rate in Finland accompanied by decreasing seasonality over the period 1957-95. Soc Sci Med 47: 1695-1698.

V   Hakko H, Räsänen P, Tiihonen J & Nieminen P. Use of statistical techniques in studies of suicide seasonality covering the period of 1970 to 1997. Submitted for publication.

These studies are referred to in the text with the above Roman numerals.