Sleep quality and related factors in postmenopausal women

Sleep disorders, resulting from hormonal changes and vasomotor symptoms, are common in both peri- and postmenopausal women. Poor sleep quality is associated with increased metabolic and cardiovascular risk, depression and a global impairment in health status.

Our study aimed to assess sleep quality in a sample of postmenopausal women and to identify the factors associated with poor sleep quality. It also considered the negative impact of sleep disorders such as insomnia, hypersomnia and breathing disturbances.

Data came from a cross-sectional study of 195 postmenopausal women conducted at the Italian Hospital of Buenos Aires, Argentina. Their sociodemographic, gynecological and clinical characteristics were recorded and sleep was assessed using the Pittsburgh Sleep Quality Index (PSQI), the Epworth Sleepiness Scale (ESS), and the Oviedo Sleep Questionnaire (Cuestionario Oviedo de Sueño, COS).

The mean PSQI score was 6.90 ± 4.43. Sleep problems were common, with 46.7% of participants scoring over 5 on the PSQI. Snoring was reported by 13% of the patients (PSQI item 10 A). While 10% of the poor sleepers reported episodes of apnea during rest (PSQI item 10B), 7.1% reported leg spasm (PSQ I item 10C). The mean total COS score was 17.57 ± 7. According to COS item 1, all the subjects reported some dissatisfaction with the quality of their sleep. According to the COS, the prevalence of insomnia was 3.6% using ICD-10 criteria and 15.4% using DSM-IV criteria. The mean ESS score was 6.12 ± 4.09.

Postmenopausal women are likely to complain of disturbed sleep. Almost half of the women in this survey said their sleep quality was impaired, and most of that group would benefit from medical attention.