Psychometric evaluation of the Chinese version of the Pittsburgh Sleep Quality Index (CPSQI) in primary insomnia and control subjects.
ABSTRACT In order to effectively study the population experiencing insomnia, it is important to identify reliable and valid tools to measure sleep that can be administered in the home setting. The purpose of this study was to assess psychometric properties for the Chinese version of the Pittsburgh Sleep Quality Index (CPSQI) in community-dwelling adults with primary insomnia. The CPSQI had an overall reliability coefficient of 0.82 -0.83 for all subjects. "Subjective sleep quality" was the component most highly correlated with the global score. Overall, the CPSQI showed acceptable test-retest reliability over a 14- to 21-day interval with a coefficient of 0.85 for all subjects and 0.77 for primary insomniacs. The two contrasting groups had significantly different global and component scores. A CPSQI of greater than 5 yielded a sensitivity and specificity of 98 and 55% in primary insomniacs vs. controls. A CPSQI of greater than 6 resulted in a sensitivity and specificity of 90 and 67%. Results suggest that the CPSQI is a psychometrically sound measure of sleep quality and disturbance for patients with primary insomnia. It may not be an effective screening tool because of its low specificity, but it can be a sensitive, reliable, and valid outcome assessment tool for use in community-based studies of primary insomnia.
SourceAvailable from: C. Harry Hui[Show abstract] [Hide abstract]
ABSTRACT: On the basis of self-determination theory, we predicted that the pursuit of material goals might negatively affect quality of life and psychological outcomes including sleep quality and mood states. We further hypothesized that the link between religious affiliation and these outcome variables could be explained, at least partially, by life goals. Longitudinal data collected from 700 Chinese adults demonstrated that for both Christians and non-believers, material goals had a detrimental effect on outcome variables measured 6 months later. More importantly, material goals partially mediated the effects of religious affiliation. That is, Christians were different from non-believers on the outcome variables partly because the former did not go after material goals. For these believers, moreover, the pursuit of religion-based goals brought psychological benefits. Not only can certain life goals explain why people with religious faiths have better psychological health and quality of life, they can also explain why not every religious person feels good and is content about their lives.Journal of Happiness Studies 07/2014; DOI:10.1007/s10902-014-9552-1 · 1.88 Impact Factor
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ABSTRACT: Background The aim of this study was to investigate whether poor sleep quality of third-trimester pregnancy is a risk factor for postpartum depression. Material and Methods Third-trimester pregnant women (T0, n=293) were tested using the first socio-demographic, Pittsburgh Sleep Quality Index, and Edinburgh Postnatal Depression Scale assessments, and received a diagnosis of depression. Three months (T1, n=223) after delivery, scale filling was finished and the structured interview was performed again. Results We found that 73 persons (32.7%) were low income, 84 persons (37.7%) were middle-income, and 66 persons (29.6%) were higher income. The overall prevalence of postpartum depression was 9.4% (21 persons). After controlling for other factors, age, household income, marital satisfaction, and sleep quality were significantly related to postpartum depression, in which age and sleep quality scores (a higher score was associated with poorer sleep quality) were positively related to postpartum depression, and household income and marital satisfaction were negatively related to postpartum depression. Moreover, third-trimester sleep quality score was positively related to postpartum depressive symptoms. Conclusions Poor third-trimester subjective sleep quality is a risk factor for postpartum depression.Medical science monitor: international medical journal of experimental and clinical research 01/2014; 20:2740-5. DOI:10.12659/MSM.891222 · 1.22 Impact Factor
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ABSTRACT: Background: Assessment of sleep only by sleep duration is not sufficient. This cross-sectional study aimed to investigate the potential association of self-reported global sleep status, which contained both qualitative and quantitative aspects, with hypertension prevalence in Chinese adults. Methods: A total of 5461 subjects (4076 of them were male) were enrolled in the current study and were divided into two groups with the age of 45 years as the cut-off value. Sleep status of all subjects was assessed using the standard Pittsburgh Sleep Quality Index (PSQI). Hypertension was defined as blood pressure ≥140/90 mmHg in the current study. Results: After adjusting for basic cardiovascular characteristics, the results of multivariate logistic regression indicated that sleep status, which was defined as the additive measurement of sleep duration and sleep quality, was associated with hypertension prevalence in males of both age groups (odds ratio (OR) = 1.11, 95% confidence interval (CI), 1.07-1.15, p < 0.05; OR = 1.12, 95% CI, 1.08-1.15, p < 0.05) and in females aged ≤45years (OR = 1.10, 95% CI, 1.02-1.18, p < 0.05). As one component of PSQI, short sleep duration was associated with hypertension prevalence only in Chinese male subjects, but this association disappeared after the further adjustment of the other components of PSQI that measured the qualitative aspect of sleep. Conclusion: Association between sleep status and hypertension prevalence in Chinese adults varied by age and sex. Sleep should be measured qualitatively and quantitatively when investigating its association with hypertension.International Journal of Environmental Research and Public Health 01/2015; 12(1):488-503. DOI:10.3390/ijerph120100488 · 1.99 Impact Factor