Hansen V, Jacobsen B K, Husby R
Institute of Community Medicine, University of Tromsø, Norway.
Acta Psychiatr Scand. 1991 Aug;84(2):137-41. doi: 10.1111/j.1600-0447.1991.tb03117.x.
The prevalence of mental distress in a general population north of the Arctic Circle at 69 degrees N was studied over 4 midwinter months. Within the framework of a health survey for coronary heart disease, 3 questions about depression, coping problems and insomnia were posed. They were answered by 7759 people randomly assigned to a survey date from November to February. The extreme lack of daylight in December and January taken into consideration, the prevalence of mental distress found, 14% in men and 19% in women, is remarkably low compared with previous epidemiologic research. Except for insomnia in women, which was most prevalent in December, no significant relationship between month of survey and any of the 3 symptoms were found. Thus, the findings cast some doubt upon the importance of daylight for mental distress in the general population.
在北纬69度的北极圈以北的普通人群中，对冬季四个月期间的精神困扰患病率进行了研究。在一项冠心病健康调查的框架内，提出了三个关于抑郁、应对问题和失眠的问题。随机分配到11月至2月调查日期的7759人回答了这些问题。考虑到12月和1月日照极度缺乏的情况，所发现的精神困扰患病率，男性为14%，女性为19%，与之前的流行病学研究相比明显较低。除了女性失眠在12月最为普遍外，未发现调查月份与这三种症状中的任何一种之间存在显著关系。因此，这些发现对日照对普通人群精神困扰的重要性提出了一些质疑。
