A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Internal consistency and factor structure of Jenkins Sleep Scale: cross-sectional cohort study among 80 000 adults
Tekijät: Juhola Juhani, Arokoski Jari PA, Ervasti Jenni, Kivimäki Mika, Vahtera Jussi, Myllyntausta Saana, Saltychev Mikhail
Kustantaja: BMJ PUBLISHING GROUP
Julkaisuvuosi: 2021
Journal: BMJ Open
Tietokannassa oleva lehden nimi: BMJ OPEN
Lehden akronyymi: BMJ OPEN
Artikkelin numero: ARTN e043276
Vuosikerta: 11
Numero: 1
Aloitussivu: 1
Lopetussivu: 5
Sivujen määrä: 5
ISSN: 2044-6055
eISSN: 2044-6055
DOI: https://doi.org/10.1136/bmjopen-2020-043276
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/53365149
ObjectivesTo 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.
DesignSurvey-based cross-sectional cohort study.
SettingSurvey conducted by an institute of occupational health.
ParticipantsEmployees 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.
ResultsOf 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.
ConclusionsThe 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.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
