Objective: To determine whether sleep duration is associated with self-rated health and quality of life in
adults residing in New South Wales, Australia.
Methods: Cross-sectional data from the 45 and Up Study were used. Sleep duration, self-rated health,
quality of life and other health-related variables were assessed using a self-report questionnaire. Multinomial
logistic regression models were used to examine whether sleep duration predicted self-rated
health and quality of life.
Results: The sample included 63,408 adults aged 45–95 years. After controlling for a range of covariates,
<6 h sleep (OR = 1.49, 95% CI 1.31–1.70), 6 h sleep (OR = 1.28, 95% CI 1.17–1.38) and P9 h sleep
(OR = 1.56, 95% CI 1.46–1.67) were associated with poorer self-rated health. Similarly, <6 h sleep
(OR = 1.80, 95% CI 1.57–2.07), 6 h sleep (OR = 1.36, 95% CI 1.24–1.49) and P9 h sleep (OR = 1.41, 95%
CI 1.30–1.53) were associated with poorer quality of life.
Conclusion: Short and long sleep were significantly associated with poor self-rated health and lower quality
of life in this large sample of middle aged and older Australian adults. While cross-sectional, these
results add weight to recent data emphasising the importance of adequate sleep in physical and mental