Reliability of a sleep quality questionnaire for use in epidemiologic studies
Background: The longer-term health impacts of poor sleep quality are of increasing interest, as evidence suggests that there are rising levels of sleep disturbance in the community. Studies have reported links between sleep quality and increased morbidity and mortality. However, the results of these...
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| Format: | Journal Article |
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British Medical Journal Group
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/11380 |
| _version_ | 1848747790291697664 |
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| author | Girschik, J. Heyworth, J. Fritschi, Lin |
| author_facet | Girschik, J. Heyworth, J. Fritschi, Lin |
| author_sort | Girschik, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Background: The longer-term health impacts of poor sleep quality are of increasing interest, as evidence suggests that there are rising levels of sleep disturbance in the community. Studies have reported links between sleep quality and increased morbidity and mortality. However, the results of these studies are constrained by limitations in the measurement of sleep quality in epidemiologic studies. The Breast Cancer Environment and Employment Study (BCEES) has developed a sleep questionnaire that attempts to address some of the limitations of previous sleep questionnaires. The present study assessed the test-retest reliability of the sleep questionnaire used in the Breast Cancer Environment and Employment Study (BCEES). Methods: Subjects for this reliability study were women who were participating as controls in the BCEES study. Test-retest reliability was evaluated for individual items, using weighted kappa for categorical variables and intraclass correlation coefficients (ICC) and limits of agreement for continuous variables. Results: Most sleep questions showed good agreement, ranging from 0.78 to 0.45. The ICC was 0.45 (95% CI 0.32–0.59) for lifetime sleep loss per year and 0.60 (95% CI 0.49–0.71) for symptom severity. Conclusions: The test-retest reliability of the general sleep questions was good, and future epidemiologic studies of sleep could reliably expand the number of assessed domains of sleep quality. However, reliability decreased as increasing detail was required from participants about specific periods of sleep disturbance, and changes to the questionnaire are warranted. |
| first_indexed | 2025-11-14T06:54:45Z |
| format | Journal Article |
| id | curtin-20.500.11937-11380 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:54:45Z |
| publishDate | 2012 |
| publisher | British Medical Journal Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-113802017-09-13T14:55:43Z Reliability of a sleep quality questionnaire for use in epidemiologic studies Girschik, J. Heyworth, J. Fritschi, Lin Background: The longer-term health impacts of poor sleep quality are of increasing interest, as evidence suggests that there are rising levels of sleep disturbance in the community. Studies have reported links between sleep quality and increased morbidity and mortality. However, the results of these studies are constrained by limitations in the measurement of sleep quality in epidemiologic studies. The Breast Cancer Environment and Employment Study (BCEES) has developed a sleep questionnaire that attempts to address some of the limitations of previous sleep questionnaires. The present study assessed the test-retest reliability of the sleep questionnaire used in the Breast Cancer Environment and Employment Study (BCEES). Methods: Subjects for this reliability study were women who were participating as controls in the BCEES study. Test-retest reliability was evaluated for individual items, using weighted kappa for categorical variables and intraclass correlation coefficients (ICC) and limits of agreement for continuous variables. Results: Most sleep questions showed good agreement, ranging from 0.78 to 0.45. The ICC was 0.45 (95% CI 0.32–0.59) for lifetime sleep loss per year and 0.60 (95% CI 0.49–0.71) for symptom severity. Conclusions: The test-retest reliability of the general sleep questions was good, and future epidemiologic studies of sleep could reliably expand the number of assessed domains of sleep quality. However, reliability decreased as increasing detail was required from participants about specific periods of sleep disturbance, and changes to the questionnaire are warranted. 2012 Journal Article http://hdl.handle.net/20.500.11937/11380 10.2188/jea.JE20110107 British Medical Journal Group unknown |
| spellingShingle | Girschik, J. Heyworth, J. Fritschi, Lin Reliability of a sleep quality questionnaire for use in epidemiologic studies |
| title | Reliability of a sleep quality questionnaire for use in epidemiologic studies |
| title_full | Reliability of a sleep quality questionnaire for use in epidemiologic studies |
| title_fullStr | Reliability of a sleep quality questionnaire for use in epidemiologic studies |
| title_full_unstemmed | Reliability of a sleep quality questionnaire for use in epidemiologic studies |
| title_short | Reliability of a sleep quality questionnaire for use in epidemiologic studies |
| title_sort | reliability of a sleep quality questionnaire for use in epidemiologic studies |
| url | http://hdl.handle.net/20.500.11937/11380 |