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The effect of long working hours on developing type 2 diabetes in adults with prediabetes: The Kangbuk Samsung Cohort Study
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Eunhye Seo, Yesung Lee, Eunchan Mun, Dae Hoon Kim, Youshik Jeong, Jaehong Lee, Jinsook Jeong, Woncheol Lee
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Ann Occup Environ Med 2022;34:e4. Published online March 14, 2022
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DOI: https://doi.org/10.35371/aoem.2022.34.e4
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 Abstract
Abstract in Korean
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- Background
Long working hours are known to account for approximately one-third of the total expected work-related diseases, and much interest and research on long working hours have recently been conducted. Additionally, as the prevalence of prediabetes and the high-risk group for diabetes are increasing worldwide, interest in prediabetes is also rising. However, few studies have addressed the development of type 2 diabetes and long working hours in prediabetes. Therefore, the aim of this longitudinal study was to evaluate the relationship between long working hours and the development of diabetes in prediabetes. MethodsWe included 14,258 prediabetes participants with hemoglobinA1c (HbA1c) level of 5.7 to 6.4 in the Kangbuk Samsung Cohort Study. According to a self-reported questionnaire, we evaluated weekly working hours, which were categorized into 35–40, 41–52, and > 52 hours. Development of diabetes was defined as an HbA1c level ≥ 6.5%. Hazard ratios (HRs) and 95% confidence intervals (CIs) for the development of diabetes were estimated using Cox proportional hazards analyses with weekly working 35–40 hours as the reference. ResultsDuring a median follow-up of 3.0 years, 776 participants developed diabetes (incidence density, 1.66 per 100 person-years). Multivariable-adjusted HRs of development of diabetes for weekly working > 52 hours compared with working 35–40 hours were 2.00 (95% CI: 1.50–2.67). In subgroup analyses by age (< 40 years old, ≥ 40 years old), sex (men, women), and household income (< 6 million KRW, ≥ 6 million KRW), consistent and significant positive associations were observed in all groups. ConclusionsIn our large-scale longitudinal study, long working hours increases the risk of developing diabetes in prediabetes patients.
- 당뇨전단계 성인의 제 2형 당뇨로 진행에 대한 장시간 근무의 영향: 강북삼성 코호트 연구
목적
이 연구의 목적은 당뇨전단계라는 고위험그룹에서 장시간 노동과 당뇨로의 진행 사이의 관계를 종단적 연구로 평가하는 것이다.
방법
연구는 강북 삼성 종합 건진 센터에서 2012년 1월 1일부터 2018년 12월 31 일 사이에 최소 두번의 건강검진을 받은 수검자 중, HbA1c 수치가 5.7~6.4인 당뇨전단계 기준을 만족하는 14,258명을 포함했다. 참가자들은 자체 보고된 설문지를 사용하여 3개 그룹 (35-40시간, 41-52시간 및 >52시간)으로 나뉘었고 당뇨로의 진행은 HbA1c 수치 ≥6.5%로 정의되었다. 당뇨 발병에 대한 위험 비율(HR) 및 95% 신뢰 구간(CI)은 주당 35-40시간 근무하는 그룹을 기준으로 Cox 비례 위험 분석을 사용하여 추정되었다.
결과
중앙값 3.0년의 추적 기간 동안 776명의 참가자가 당뇨(발병률, 100인년당 1.66)로 발전했습니다. 주당 근무시간이 35-40시간인 그룹과 비교하여 52시간 초과 근무한 그룹의 다 변수 조정 당뇨 발생 위험비율은 2.00(95% 신뢰구간 [1.50–2.67])이었다. 연령(40세 미만, 40세 이상), 성별(남성, 여성) 및 가계 소득(600만원, 600만원)에 따른 하위 그룹 분석에서 모든 그룹에서 일관되고 유의한 연관성이 관찰되었다.
결론
이 대규모 종단 연구는 당뇨전단계에서 긴 근무 시간이 당뇨 발병과 관련이 있음을 보여주었다.
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Citations
Citations to this article as recorded by  - Association between long working hours and diet quality and patterns: A latent profile analysis of a nationally representative sample of Korean workers
Seong-Uk Baek, Jong-Uk Won, Yu-Min Lee, Jin-Ha Yoon
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Guang X. Chen
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Sangjun Lee, Kwang-Pil Ko, Jung Eun Lee, Inah Kim, Sun Ha Jee, Aesun Shin, Sun-Seog Kweon, Min-Ho Shin, Sangmin Park, Seungho Ryu, Sun Young Yang, Seung Ho Choi, Jeongseon Kim, Sang-Wook Yi, Daehee Kang, Keun-Young Yoo, Sue K. Park
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