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Effect of COVID-19 Infection on Presenteeism: A Cohort Study Using Large Health Insurance-Based Data in Japan
Chikara Miyaji1, Tomoko Kobayashi, Hiroshi Habu
1From the Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Okayama, Japan (C.M., T.K., H.H., A.H., Y.H.); Health Service Center, Okayama University, Okayama City, Okayama, Japan (C.M.); Department of Social Epidemiology, Graduate School of Medicine and School of Public Health, Kyoto University, Kyoto City, Kyoto, Japan (H.H., Y.H.); and Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama City, Okayama, Japan (S.T.).
Objective:
Presenteeism occurs when employees attend work despite experiencing problems and ill-health that require sick leave. This study examined whether presenteeism worsened following COVID-19 infection.
Methods:
We used the DeSC, a large health insurance claims database. Participants were 9241 individuals who responded to questionnaires at baseline (June 2020) and 6 months later, had been continuously insured for at least 6 months prior to baseline, and reported being employed. Propensity score matching was performed. Adjusted multiple logistic regression was used to estimate odds ratios and 95% confidence intervals of worsening presenteeism from baseline according to COVID-19 infection compared with noninfection.
Results:
Conditional logistic regression analysis showed that the adjusted OR for presenteeism in the COVID-19-infected group was 1.555 (95% confidence interval, 1.086-2.225).
Conclusions:
The findings suggest that COVID-19 infection affected worsening of presenteeism.
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