Because secular trends in seasonality of different types of suicides has not been studied before, we utilized a novel statistical method to evaluate this phenomenon by using national Finnish suicide statistics during 1980-95.
Rates were analyzed with ordinary linear regression analysis.
Secular trends were evaluated using ratio-statistic and its 95% confidence intervals.
The rate of violent suicides increased before year 1990 and decreased since that.
The nonviolent suicide rate increased continuously.
The decreasing tendency of seasonality in nonviolent suicides and a slight decrease in violent suicides are seen within the three successive time periods studied.
Trends in rates and in seasonality of suicides might be related to changes in the health politics in Finland.
The short time-series and lack of studying associations of suicides with socioeconomic, environmental or biological factors are limitations of our study.
Clinical relevance : Studying the time-dependent changes in rates and in seasonality of suicides provide a novel perspective for the evaluation of the aetiology of suicidal behaviour.
Mots-clés Pascal : Suicide, Variation saisonnière, Prévalence, Epidémiologie, Santé mentale, Finlande, Europe, Homme
Mots-clés Pascal anglais : Suicide, Seasonal variation, Prevalence, Epidemiology, Mental health, Finland, Europe, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0469852
Code Inist : 002B18C11. Création : 19/02/1999.