ArticleBMC pregnancy and childbirth2022
Comparison of factor structures of the Pittsburgh sleep quality index between mid- and late pregnancy among Korean women: a cross-sectional study.
Article in BMC pregnancy and childbirth, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 5 citations in OpenAlex.
- Sleep Matters for Intimacy: Impact of Sleep Quality and Psychosocial Context on Female Sexual Function During Pregnancy.Medicina (Kaunas, Lithuania) · 2026Article
- Factors Associated with Poor Sleep Quality in Postpartum Women: A Crossectional Study.Sleep science (Sao Paulo, Brazil) · 2024Article
- Effect of biological, psychological, and social factors on maternal depressive symptoms in late pregnancy: a cross-sectional study.Frontiers in psychiatry · 2023Article
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4 authors at 3 institutions in 2 countries.
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Abstract
backgroundSleep disturbance in pregnant women needs to be accurately assessed in a timely manner during pregnancy, to receive assessment-driven accurate intervention. This study aims to compare the factor structure of the Pittsburgh Sleep Quality Index (PSQI) among women in mid- and late pregnancy and evaluate the psychometric features of the Korean version of the PSQI.
methodsThe survey questionnaire with the PSQI, Center for Epidemiological Studies Depression scale, and pregnancy stress, was completed by 281 women in mid- or late pregnancy. Exploratory factor analysis determined the best factor structure of the PSQI, and the Pearson correlation coefficient examined a convergent validity with depressive symptoms and pregnancy stress. Internal consistency was examined using Cronbach's alpha.
resultsIn both mid- and late-pregnancy women, a two-factor structure model was identified. However, each factor's different components were named differently. For women in mid-pregnancy, it was named "quantitative sleep quality" and "subjective sleep quality," and for those in later stages of pregnancy, they were named "perceived sleep quality" and "daily disturbance." The PQSI score showed a significantly positive correlation between depressive symptoms and pregnancy stress in mid- (r = 0.57 and r = 0.39, respectively), and late pregnancy (r = 0.48 and 0.28, respectively). The overall Cronbach's alpha for the PSQI was 0.63.
conclusionsThe Korean version of the PSQI demonstrated excellent construct and convergent validity, making it suitable to assess the sleep quality of women in middle to late stages of their pregnancy. The PSQI was found to have a two-factor structure in the mid-and late pregnancy, but the components were different. As sleep quality changes with each gestational stage, factors affecting it during mid- and late pregnancy need to be separately examined. It will make it easier for medical professionals to provide pregnant women sleeping irregularly, with the right kind of intervention.
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