Seasonality of births in affective disorder in an Irish population.
Seasonal variation in the births of patients with schizophrenia is a consistently replicated epidemiological finding.
Few studies have investigated this phenomenon among patients with a diagnosis of affective disorder.
The majority of season of birth studies have employed the chi square test for statistical analysis, a method that has been subject to some criticism.
Using a Kolgomorov-Smirnov type statistic, the quarterly birth distribution of 6,646 patients with an ICD 9/10 diagnosis of affective disorder were compared to the general population.
Only the births of those individuals with unipolar forms of affective disorder (n=4,393) differed significantly from the general population, with significant excesses and deficits in the second quarter and fourth quarter respectively.
These results were not altered by application of the displacement test.
Mots-clés Pascal : Variation saisonnière, Naissance, Trouble bipolaire, Etat dépressif, Unipolaire, Epidémiologie, Irlande, Europe, Homme, Trouble humeur
Mots-clés Pascal anglais : Seasonal variation, Birth, Bipolar disorder, Depression, Unipolar, Epidemiology, Ireland, Europe, Human, Mood disorder
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0523905
Code Inist : 002B18C07A. Création : 23/03/1999.