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Increased suicides during new year, but not during Christmas in Sweden: analysis of cause of death data 2006–2015
Engelsk titel: Increased suicides during new year, but not during Christmas in Sweden: analysis of cause of death data 2006–2015 Läs online Författare: Hadlaczky, Gergö ; Hökby, Sebastian Språk: Eng Antal referenser: 16 Dokumenttyp: Artikel UI-nummer: 18040114

Tidskrift

Nordic Journal of Psychiatry 2018;72(1)72-4 ISSN 0803-9488 E-ISSN 1502-4725 KIBs bestånd av denna tidskrift Denna tidskrift är expertgranskad (Peer-Reviewed)

Sammanfattning

Background: Previous studies have investigated the impact of the Christmas and New Year holiday on suicide rates. However, no such data has yet been published on Swedish suicides. Aims: To examine the occurrence of suicides on these dates in Sweden between 2006 and 2015. Methods: The suicide count for each date between December 15th and January 15th was obtained from the Swedish cause of death registry. The observations were transformed to Z-scores to enable calculation of p-values. Results: A small but non-significant decrease in suicides was observed on Christmas and New Year’s Eve. A significant spike was found on New Year’s Day (NYD) (Z = 3.40; p < .001), and these excess suicide occurred mainly among men aged 15–24 and 45–64. However, the number of suicides were somewhat lower than expected on the 31st of December (Z = −1.58; p = .115). Discussion: The noted increase in suicide on NYD is in line with previous research from other countries. However, the decrease in suicides on the day before NYD suggests a delay rather than a spontaneous increase of suicides. Possible mechanisms to explain this phenomenon are discussed, such as the “broken promise effect”, increased alcohol consumption, or lower help-seeking and accessibility to care.