Responses to the Seasonal Pattern Assessment Questionnaire in different seasons.
OBJECTIVE
The study investigated whether results on the Seasonal Pattern Assessment Questionnaire, which is used for diagnosis of seasonal affective disorder, differed by the season in which the questionnaire was completed.


METHODS
Every third month from March 1997 to February 1998, a population-based panel of 200 men and women age 27-72 years in Gamvik, northern Norway, completed a standardized questionnaire that included all items from the Seasonal Pattern Assessment Questionnaire.


RESULTS
The average score for seasonal affective disorder changed over the year. The difference between the highest score, in March, and the lowest, in September, was 8.8%.


CONCLUSIONS
Results on the Seasonal Pattern Assessment Questionnaire varied by season, but did not vary by seasonal differences in the amount of daylight.
Lund
E
E
Institute of Community Medicine, University of Tromsø, Norway. eiliv.lund@ism.uit.no
Hansen
V
V
D000328:Adult; D000368:Aged; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009664:Norway; D010555:Personality Inventory / Q000592:standards / Q000706:statistics & numerical data; D017440:Photoperiod; D015995:Prevalence; D011594:Psychometrics; D015203:Reproducibility of Results; D016574:Seasonal Affective Disorder / Q000175:diagnosis* / Q000453:epidemiology; D012621:Seasons; D011795:Surveys and Questionnaires / Q000592:standards*