Sleep Epidemiology (Dec 2022)
Sleep quality in the Brazilian general population: A cross-sectional study
Abstract
Objective: This study aimed to assess sleep quality and the independent predictors of poor sleep quality in the Brazilian population. Methods: An online survey was conducted in adults from all five Brazilian regions. Participants answered a structured questionnaire including variables such as sex, age, geographic region, state, socioeconomic class, education level, the existence of a partner/roommate, self-reported insomnia, and smart phone/interactive media use. The Pittsburgh Sleep Quality Index (PSQI) was used to assess sleep quality. A logistic regression model was built to assess potential independent predictors of poor sleep quality (PSQI >5). Results: A total of 2,635 adult individuals were included in the study (median age: 35 years, 54.1% females). Median PSQI score was 7.0 (IQR: 4.0; 65.5% of poor sleepers). Multivariate model showed that females (OR: 1.079; 95% CI: 1.041-1.119); age <55 years (OR: 1.107; 95% CI: 1.031–1.189); having a partner/roommate sleeping in another bed (OR: 1.086; 95% CI: 1.005–1.172) and in another room (OR: 1.137; 95% CI: 1.046–1.235); self-reported insomnia (OR: 1.410; 95% CI: 1.357–1.465); living in Midwest (OR: 1.125; 95% CI: 1.005-1.259), South (OR: 1.121; 95% CI: 1.015-1.239) and Southeast (OR: 1.125; 95% CI: 1.025-1.236) regions, compared to North; and smart phone/interactive media use (OR: 1.129; 95% CI: 1.088-1.171) were predictors of poor sleep quality. Conclusion: Poor sleep quality is prevalent among the Brazilian population. Being younger, female, having a partner sleeping in another bed or room, self-reported insomnia, and smart phone/interactive media use were predictors of poor sleep quality.
