Relationships between menopausal and mood symptoms and EEG sleep measures in a multi-ethnic sample of middle-aged women: the SWAN sleep study.
STUDY OBJECTIVES
Examine associations of vasomotor and mood symptoms with visually scored and computer-generated measures of EEG sleep.


DESIGN
Cross-sectional analysis.


SETTING
Community-based in-home polysomnography (PSG).


PARTICIPANTS
343 African American, Caucasian, and Chinese women; ages 48-58 years; pre-, peri- or post-menopausal; participating in the Study of Women's Health Across the Nation Sleep Study (SWAN Sleep Study).


INTERVENTIONS
None.


MEASUREMENTS AND RESULTS
Measures included PSG-assessed sleep duration, continuity, and architecture, delta sleep ratio (DSR) computed from automated counts of delta wave activity, daily diary-assessed vasomotor symptoms (VMS), questionnaires to collect mood (depression, anxiety) symptoms, medication, and lifestyle information, and menopausal status using bleeding criteria. Sleep outcomes were modeled using linear regression. Nocturnal VMS were associated with longer sleep time. Higher anxiety symptom scores were associated with longer sleep latency and lower sleep efficiency, but only in women reporting nocturnal VMS. Contrary to expectations, VMS and mood symptoms were unrelated to either DSR or REM latency.


CONCLUSIONS
Vasomotor symptoms moderated associations of anxiety with EEG sleep measures of sleep latency and sleep efficiency and was associated with longer sleep duration in this multi-ethnic sample of midlife women.
['Kravitz|Howard M|HM|', 'Avery|Elizabeth|E|', 'Sowers|Maryfran|M|', 'Bromberger|Joyce T|JT|', 'Owens|Jane F|JF|', 'Matthews|Karen A|KA|', 'Hall|Martica|M|', 'Zheng|Huiyong|H|', 'Gold|Ellen B|EB|', 'Buysse|Daniel J|DJ|']
D001741:African Americans D044466:Asians D003430:Cross-Sectional Studies D004569:Electroencephalography D005260:Female D006801:Humans D008593:Menopause D008875:Middle Aged D019964:Mood Disorders D017286:Polysomnography D012893:Sleep Wake Disorders D014666:Vasomotor System D044465:Whites
delta sleep ratio vasomotor symptoms Anxiety menopausal status REM latency REM sleep delta (slow wave) sleep depressive symptoms race/ethnicity sleep continuity