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Fraction and Number of Unemployed Associated with Self-Reported Low Back Pain: A Nation-Wide Cross-Sectional Study in Japan

Author

Listed:
  • Kimiko Tomioka

    (Nara Prefectural Health Research Center, Nara Medical University, Kashihara 634-8521, Nara, Japan)

  • Teruyo Kitahara

    (Division of Occupational and Environmental Health, Department of Social Medicine, Shiga University of Medical Science, Otsu 520-2192, Shiga, Japan)

  • Midori Shima

    (Nara Prefectural Health Research Center, Nara Medical University, Kashihara 634-8521, Nara, Japan)

  • Keigo Saeki

    (Nara Prefectural Health Research Center, Nara Medical University, Kashihara 634-8521, Nara, Japan)

Abstract

This study examined a cross-sectional association between self-reported low back pain (LBP) and unemployment among working-age people, and estimated the impact of self-reported LBP on unemployment. We used anonymized data from a nationally representative survey (24,854 men and 26,549 women aged 20–64 years). The generalized estimating equations of the multivariable Poisson regression models stratified by gender were used to estimate the adjusted prevalence ratio (PR) and 95% confidence interval (CI) for unemployment. The population attributable fraction (PAF) was calculated using Levin’s method, with the substitution method for 95% CI estimation. The prevalence of self-reported LBP was 9.0% in men and 11.1% in women. The prevalence of unemployment was 9.3% in men and 31.7% in women. After adjusting for age, socio-economic status, lifestyle habits, and comorbidities, the PR (95% CI) for the unemployment of the LBP group was 1.32 (1.19–1.47) in men and 1.01 (0.96–1.07) in women, compared with the respective non-LBP group. The PAF (95% CI) of unemployment associated with self-reported LBP was 2.8% (1.6%, 4.2%) in men. Because the total population of Japanese men aged 20–64 in 2013 was 36,851 thousand, it was estimated that unemployment in 1037 thousand of the Japanese male working population was LBP-related.

Suggested Citation

  • Kimiko Tomioka & Teruyo Kitahara & Midori Shima & Keigo Saeki, 2021. "Fraction and Number of Unemployed Associated with Self-Reported Low Back Pain: A Nation-Wide Cross-Sectional Study in Japan," IJERPH, MDPI, vol. 18(20), pages 1-12, October.
  • Handle: RePEc:gam:jijerp:v:18:y:2021:i:20:p:10760-:d:655604
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    References listed on IDEAS

    as
    1. Power, C. & Frank, J. & Hertzman, C. & Schierhout, G. & Li, L., 2001. "Predictors of low back pain onset in a prospective British study," American Journal of Public Health, American Public Health Association, vol. 91(10), pages 1671-1678.
    2. Girardin Jean-Louis & Arlener D. Turner & Azizi Seixas & Peng Jin & Diana M. Rosenthal & Mengling Liu & George Avirappattu, 2020. "Epidemiologic Methods to Estimate Insufficient Sleep in the US Population," IJERPH, MDPI, vol. 17(24), pages 1-8, December.
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