Seasonal patterns of sickness absence due to diagnosed mental disorders: a nationwide 12-year register linkage study.
Marianna VirtanenS TörmälehtoT PartonenM ElovainioR RuuhelaChristian HakulinenK KomulainenJ AiraksinenA VäänänenA KoskinenReijo SundPublished in: Epidemiology and psychiatric sciences (2023)
These results suggest a seasonal variation in sickness absence due to common mental disorders and bipolar disorder, with high peaks in depressive, anxiety and sleep disorders towards the end of the year and a peak in manic episodes starting in spring. Rapid changes in light exposure may contribute to sickness absence due to bipolar disorder. The findings can help clinicians and workplaces prepare for seasonal variations in healthcare needs.