Dataset Information

Internal consistency and factor structure of Jenkins Sleep Scale: cross-sectional cohort study among 80?000 adults.

ABSTRACT:

Objectives

To assess the internal consistency and construct validity of the Finnish translation of the Jenkins Sleep Scale (JSS) in a large healthy working-age population with diverse work characteristics.

Design

Survey-based cross-sectional cohort study.

Setting

Survey conducted by an institute of occupational health.

Participants

Employees of 10 towns and 6 hospital districts.

Primary and secondary outcome measures

The internal consistency defined by a Cronbach's alpha. Exploratory and confirmatory factor analyses to evaluate the construct structure of the JSS.

Results

Of 81?136 respondents, 14?890 (18%) were men and 66?246 (82%) were women. Their average age was 52.1 (13.2) years. Of the respondents, 41?823 (52%) were sleeping 7 or less hours per night. The mean JSS total score was 6.4 (4.8) points. The JSS demonstrated high internal consistency with an alpha of 0.80 (lower 95% confidence limit 0.80). Exploratory factor analysis supported a one-factor solution with eigenvalue of 1.94. Confirmatory factor analysis showed that all four items were positively correlated with a single common factor explaining 44%-61% of common factor's variance.

Conclusions

The Finnish translation of JSS was found to be a unidimensional scale with good internal consistency. As such, the scale may be recommended as a practicable questionnaire when studying sleep difficulties in a healthy working-age population.

SUBMITTER: Juhola J

PROVIDER: S-EPMC7813292 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Publications

Internal consistency and factor structure of Jenkins Sleep Scale: cross-sectional cohort study among 80 000 adults.

Juhola Juhani J Arokoski J P A JPA Ervasti Jenni J Kivimäki Mika M Vahtera Jussi J Myllyntausta Saana S Saltychev M M

BMJ open 20210118 1

<h4>Objectives</h4>To assess the internal consistency and construct validity of the Finnish translation of the Jenkins Sleep Scale (JSS) in a large healthy working-age population with diverse work characteristics.<h4>Design</h4>Survey-based cross-sectional cohort study.<h4>Setting</h4>Survey conducted by an institute of occupational health.<h4>Participants</h4>Employees of 10 towns and 6 hospital districts.<h4>Primary and secondary outcome measures</h4>The internal consistency defined by a Cronb ...[more]

PMID: 33462100

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