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Relationship between working hours and probability to take alopecia medicine among Korean male workers: a 4-year follow-up study

 ( Son Kyung-Hun ) - Sungkyunkwan University School of Medicine Kangbuk Samsung Hospital Department of Occupational and Environmental Medicine

 ( Suh Byung-Seong ) - Sungkyunkwan University School of Medicine Kangbuk Samsung Hospital Department of Occupational and Environmental Medicine
 ( Jeong Han-Seur ) - Sungkyunkwan University School of Medicine Kangbuk Samsung Hospital Department of Occupational and Environmental Medicine
 ( Nam Min-Woo ) - Sungkyunkwan University School of Medicine Kangbuk Samsung Hospital Department of Occupational and Environmental Medicine
 ( Kim Hyun-Il ) - Sungkyunkwan University School of Medicine Kangbuk Samsung Hospital Department of Occupational and Environmental Medicine
 ( Kim Hyeong-Cheol ) - Sungkyunkwan University School of Medicine Kangbuk Samsung Hospital Department of Occupational and Environmental Medicine

Abstract


Background: Many studies have reported the negative effects of long working hours on various health problems. However, whether hair loss is associated with working hours has been rarely investigated so far. The main purpose of this study is to explore the relationship between long working hours and the development of alopecia among Korean male workers.

Methods: A total of 13,391 male workers not to take alopecia medicine in 2013 were followed up to see if they have alopecia medicine after 4 years, and that was used to confirm the alopecia development. Weekly working hours were categorized into three groups: reference working hours (RWH; < 40 hours/week), long working hours (LWH, 40?52 hours/week), and much longer working hours (MLWH; > 52 hours/week). Multiple logistic regression analyses were conducted to investigate the relationship between long working hours and the development of alopecia after adjusting age, marital status, education, monthly household income, smoking, and work schedule within strata of the covariates.

Results: Long working hours was significantly related to the development of alopecia. The adjusted odds ratios (ORs) for the development of alopecia were 1.57 (95% confidence interval [CI]: 1.21?2.05) for LWH group and 1.74 (95% CI: 1.23?2.47) for MLWH group relative to RWH group.

Conclusions: Our findings suggest that unintentional development of alopecia is another potential health consequence of long working hours among Korean male workers. Preventive interventions to promote appropriate and reasonable working hours are required in our society.

키워드

Alopecia; Long working hours; Occupational health; Male
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