Scandinavian journal of work, environment & health
-
Scand J Work Environ Health · Sep 2012
The joint association of sleep duration and insomnia symptoms with disability retirement--a longitudinal, register-linked study.
The aim of this study was to examine the joint association of sleep duration and insomnia symptoms with subsequent disability retirement. ⋯ Frequent insomnia symptoms dominate the joint association of sleep duration and insomnia symptoms with subsequent disability retirement. Examining exclusively sleep duration would provide an incomplete understanding of the consequences of poor sleep.