PT  - JOURNAL ARTICLE
AU  - Maria Alhainen
AU  - Mikko Härmä
AU  - Jaana Pentti
AU  - Jenni M Ervasti
AU  - Mika Kivimäki
AU  - Jussi Vahtera
AU  - Sari Stenholm
TI  - Sleep duration and sleep difficulties as predictors of occupational injuries: a cohort study
AID  - 10.1136/oemed-2021-107516
DP  - 2022 Apr 01
TA  - Occupational and Environmental Medicine
PG  - 224--232
VI  - 79
IP  - 4
4099  - http://oem.bmj.com/content/79/4/224.short
4100  - http://oem.bmj.com/content/79/4/224.full
SO  - Occup Environ Med2022 Apr 01; 79
AB  - Study objectives To examine the association between sleep duration and sleep difficulties with different types and causes of workplace and commuting injuries.Methods The data were derived from the Finnish Public Sector study including 89.543 participants (178.309 person-observations). Participants reported their sleep duration and sleep difficulties between 2000 and 2012. These were linked to occupational injury records from the national register maintained by the Federation of Accident Insurance Institutions. Risk of injuries was followed up 1 year after each study wave. Logistic regression analysis with generalised estimating equations (GEEs) was used to examine the association between sleep duration/difficulties and risk of injuries, and multinomial logistic regression with GEE was used to examine the association with injury types and causes.Results Both sleep duration and difficulties were associated with injuries. Employees with short sleep (≤6.5 hours) had 1.07-fold odds of workplace injuries (95% CI 1.00 to 1.14) and 1.14 times higher odds of commuting injuries (95% CI 1.04 to 1.26) compared with employees with normal sleep duration. For employees with disturbed sleep, the corresponding ORs were 1.09-fold (95% CI 1.02 to 1.17) and 1.14-fold (95% CI 1.04 to 1.26) compared with those without sleep difficulties, respectively. The risk of commuting injuries was higher among those who had difficulty in falling asleep (OR 1.29, 95% CI 1.07 to 1.55), woke up too early (OR 1.11, 95% CI 1.00 to 1.23) or had non-restorative sleep (OR 1.18, 95% CI 1.05 to 1.33).Conclusions Short sleep duration and sleep difficulties are associated with slightly increased risk of workplace and commuting injuries.Data are available upon reasonable request.