Psychosocial factors affecting sleep quality of pre-employed firefighters: A cross-sectional study

Myeong Seob Lim, Solam Lee, Kwanghyun Seo, Hyun Jeong Oh, Ji Su Shin, Sung Kyung Kim, Hee Tae Kang, Kyeong Sook Jeong, Sung Soo Oh, Sang Baek Koh, Yeon Soon Ahn

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10 Citations (Scopus)


Background: There have been no health-related studies of pre-employed firefighters without firefighter-specific job-related factors (FSJRF). This study aimed to evaluate the sleep quality of pre-employed firefighters and to examine the relationship between sleep quality and psychosocial factors. Methods: We conducted a self-report questionnaire survey for 602 pre-employed firefighters at 3 Fire Service Academies after brief lecture about sleep. Sleep quality and psychosocial variables such as depression, anxiety, stress and social support were evaluated. The independent 2 sample t-test, χ2 test and multiple logistic regression analysis were used to evaluate the effect of the variables on the sleep quality of pre-employed firefighters. Results: Among a total of 602 people, 347 (57.6%) had good sleep quality and 255 (42.4%) had poor sleep quality. Pittsburgh Sleep Quality Index score of them was 3.29 ± 1.41) and 7.87 ± 2.20), respectively. 24 (4.0%) were evaluated to have insomnia by Insomnia Severity Index. Logistic regression analyses showed that the depression (adjusted odds ratio [aOR]: 5.940, 95% confidence interval [CI]: 3.124-11.292), anxiety (aOR: 4.233, 95% CI: 2.138-8.381), stress (aOR: 2.880, 95% CI: 1.915-4.330) and social support (aOR: 0.959, 95% CI: 0.939-0.980) have a significant effect on sleep quality after adjusted by sex, age, smoking status, drinking status, caffeine intake, past shift working and circadian rhythm type. Conclusions: Depression, anxiety, stress and social support were associated with sleep quality among pre-employed firefighters. Repeated follow-up studies of pre-employed firefighters are needed to further assess their change of sleep quality and identify the FSJRF that may affect the sleep quality of firefighters.

Original languageEnglish
Article numbere12
JournalAnnals of Occupational and Environmental Medicine
Issue number1
Publication statusPublished - 2020

Bibliographical note

Publisher Copyright:
© 2020 Korean Society of Occupational.

All Science Journal Classification (ASJC) codes

  • Public Health, Environmental and Occupational Health


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