The association of depressive symptoms to sleep-related symptoms during menopausal transition: racial/ethnic differences

Objectives: Despite an increasing number of studies reporting significant associations of depression to sleep problems in general, few studies have been conducted on racial/ethnic variations in the associations among midlife women in their menopausal transition. The purpose of this study was to determine the associations between depressive symptoms and sleep-related symptoms in a multiethnic group of midlife women while considering the women's race/ethnicity and menopausal status. Methods: This was a secondary analysis of the data from 1,054 midlife women in two larger studies. The depression index for midlife women and the sleep index for midlife women were used to measure sleep-related symptoms and depressive symptoms. Descriptive and inferential statistics including hierarchical multiple regression analyses were used for data analyses. Results: In the regression models by race/ethnicity, the total numbers (0.294 in non-Hispanic [NH] African Americans <= beta <= 0.410 in NH Asians), and total severity scores (0.141 in Hispanic <= beta <= 0.365 in NH Whites) of depressive symptoms were positively associated with the total severity of sleep-related symptoms (all P < 0.01). In the regression models by menopausal status, the total numbers (beta = 0.106 in premenopausal and 0.443 in postmenopausal) and total severity scores (0.272 <= beta <= 0.561) of depressive symptoms were positively associated with the total severity scores of sleep-related symptoms (all P < 0.05). Conclusions: Further studies with diverse groups of midlife women using objective measurements and biomarkers are warranted to confirm the findings.