Objective: The purpose of this study was to conduct a systematic review and meta-analysis of the relationship between menopausal stages and sleep disturbance reported using subjective methods. Secondary aims included examining the influence of culture/ethnicity on the relationship between menopausal stages and sleep disturbance.
Methods: Multiple electronic databases were searched from the first available year to November 2013, and a manual search of the reference lists of review articles identified was also conducted. Twenty-four studies with a total of 63,542 midlife women were identified, coded, and analyzed.
Results: The crude and adjusted odds of experiencing sleep disturbance were small but statistically significant for perimenopausal and postmenopausal women, using premenopause as the reference group. The ethnicity of the samples influenced effect sizes; Asian and white women both experienced an increased rate of sleep disturbance at the perimenopausal and postmenopausal stages compared with the premenopausal stage, whereas Hispanic women experienced no change in sleep disturbance across the menopausal transition.
Conclusions: The prevalence of sleep disturbance is higher in perimenopausal, postmenopausal, and surgical menopausal women than in premenopausal women. There is an independent relationship between menopausal stages and sleep disturbance beyond the effects of aging and other confounders, although the magnitude of the relationship is small. Culture, ethnicity, or both might affect the levels of sleep disturbance at various menopausal stages.
From the 1Sansom Institute of Health Research, School of Nursing and Midwifery, University of South Australia,South Australia, Australia; and 2School of Psychology, Australian Catholic University, Queensland, Australia.
Received December 23, 2013; revised and accepted February 20, 2014.
Funding/support: This study received funding from the Australian Catholic University (Faculty Early Career Research Incentive Award). No funding was received from the National Institutes of Health, Welcome Trust, or Howard Hughes Medical Institute.
Financial disclosure/conflicts of interest: None reported.
Address correspondence to: Qunyan Xu, PhD, Sansom Institute of Health Research, School of Nursing and Midwifery, University of South Australia, GPO Box 2471, Adelaide, South Australia 5001, Australia. E-mail: firstname.lastname@example.org