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Validation of the sleep hygiene index for the elderly

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Abstract

Aim

The aim of this study was to determine the validity and reliability of a sleep hygiene index for the elderly.

Subjects and methods

A total of 598 elderly people (mean age 68.34 years) were selected through cluster sampling, and the validity and reliability of the sleep hygiene index were measured. Confirmatory factor analysis was used to determine the structure validity, internal consistency and reliability of the questionnaire. To this end, Cronbach’s alpha coefficient was used. In addition, concurrent validities with indicators such as sleep quality, Epworth sleepiness, insomnia severity, overall sleepiness measurement and the Berlin Questionnaire were studied.

Results

The confirmatory factor analysis indexes of the structural equation model showed that the model fitted well with the data. The χ2/df ratio for the three-factor structure of sleep hygiene was 4.65, and the goodness of fit indices for this structural model (RMSEA = 0.064, CFI =0.9, TLI = 0.9, NFI = 0.9, GFI = 0.9) were good. The Cronbach’s alpha coefficient of the whole scale was 0.78, and the re-test coefficient was 0.87.

Conclusion

The Persian version of the Sleep Hygiene Index can be used as a reliable and valid tool for assessing sleep hygiene in the population of non-clinical elderly.

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Data availability

The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.

Abbreviations

SHI:

Sleep Health Index

ISI:

Insomnia Severity Index

ESS:

Epworth Sleepiness Scale

TLI:

Tucker-Lewis Index

NFI:

Normed Fit Index

CFS:

Chronic fatigue syndrome

GFI:

Goodness of fit index

RMSEA:

Root mean square error of approximation

CFI:

Confirmatory fit index

GSAQ:

Global Sleep Assessment Questionnaire

KUMS:

Kermanshah University of Medical Sciences

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Acknowledgements

We are grateful to the Deputy for Research and Technology (grant no. 95668), Kermanshah University of Medical Sciences, for cooperating in this research. We thank all the participants in the study.

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Authors and Affiliations

Authors

Contributions

Azita Chehri contributed to the study concept, study design, data collection and manuscript preparation.

Layla Parsa contributed to the study concept, study design, data collection and manuscript preparation.

Sepideh Khazaie contributed to the study concept, study design and manuscript preparation.

Habibolah Khazaie contributed to the study concept, study design, data collection and manuscript preparation.

Amir Jalali contributed to the study concept, study design, data analysis, manuscript preparation and submitting the manuscript.

Corresponding author

Correspondence to Amir Jalali.

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In this research, the ethical considerations including the principles of confidentiality of information, obtaining written informed consent for participating in study, publication and having the right to withdraw from the research at any time were observed. This study was approved by the research committee (grant no. 95668) and ethics committee of Kermanshah University of Medical Sciences (KUMS.REC 1397.678).

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All the authors and the Kermanshah University of Medical Sciences consented to publish the study in this journal.

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The authors declare that they have no conflict of interest related to this work.

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Chehri, A., Parsa, L., Khazaie, S. et al. Validation of the sleep hygiene index for the elderly. J Public Health (Berl.) 29, 787–793 (2021). https://doi.org/10.1007/s10389-019-01180-3

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  • DOI: https://doi.org/10.1007/s10389-019-01180-3

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