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The relationship between poor sleep quality measured by the Pittsburgh Sleep Quality Index and smoking status according to sex and age: an analysis of the 2018 Korean Community Health Survey
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Jun Hyun Hwang
 , Soon-Woo Park
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Epidemiol Health. 2022;44:e2022022. Published online February 14, 2022
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DOI: https://doi.org/10.4178/epih.e2022022
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Abstract
OBJECTIVES
Multiple studies have found that cigarette smokers are more likely to experience sleep disturbances than non-smokers. This study aimed to examine various associations between smoking and sleep quality according to sex and age, which have yet to be sufficiently examined in prior studies.
METHODS Data analysis was conducted using a nationally representative sample of 224,986 Korean adults who participated in the 2018 Korea Community Health Survey. Sleep quality, as the dependent variable, was measured using the Pittsburgh Sleep Quality Index (PSQI), with PSQI scores indicating either good (≤4 points) or poor (>5 points) sleep quality. Multiple logistic regression analysis was performed considering socio-demographic factors, health behaviors, comorbidities, and psychological factors as covariates.
RESULTS The overall weighted prevalence of poor sleep quality was 39.4% (95% confidence interval, 39.1 to 39.7). In the multivariate model that excluded psychological factors, poor sleep quality positively correlated to smoking for both sexes and all age groups except for male aged ≥65 years. However, in the full model that included psychological factors, statistically significant odds ratios (approximately 1.5) for poor sleep quality according to smoking status were only observed for female under 65 years of age.
CONCLUSIONS The relationship between poor sleep quality and smoking status differed according to sex and age. In order to improve the quality of sleep, it is necessary to intervene smoking cessation along with solving psychological problems, especially female in middle age and younger.
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Summary
Korean summary
한국 성인의 39.4%는 수면의 질(피츠버그 수면의 질 지수(PSQI) 기준)이 낮았다. 성별 및 연령에 따라 흡연과 수면의 질 사이의 관련성은 다르게 나타났다. 구체적으로는 65세 이하의 여성에서 흡연은 수면의 질 악화와 관련성이 있었으나, 남성 또는 65세 이상 여성에서는 흡연과 수면의 질 간 유의한 관련성을 보이지 않았다.
Key Message
In order to improve the quality of sleep, it is necessary to intervene smoking cessation along with solving psychological problems, especially female in middle age and younger.
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Citations
Citations to this article as recorded by  - The associations between working conditions and subjective sleep quality among female migrant care workers
I-Ming Chen, Tzu-Yun Lin, Yi-Ling Chien, Jennifer Yi-Ying Chen, Jen-Hui Chan, Shih-Cheng Liao, Po-Hsiu Kuo, Hsi-Chung Chen
Frontiers in Public Health.2023;[Epub] CrossRef
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