PMID- 31852710
OWN - NLM
STAT- MEDLINE
DCOM- 20201110
LR  - 20221207
IS  - 2044-6055 (Electronic)
IS  - 2044-6055 (Linking)
VI  - 9
IP  - 12
DP  - 2019 Dec 17
TI  - Cross-sectional study of the association between long working hours and 
      pre-diabetes: 2010-2017 Korea national health and nutrition examination survey.
PG  - e033579
LID - 10.1136/bmjopen-2019-033579 [doi]
LID - e033579
AB  - OBJECTIVE: Long working hours have been shown to raise the risk of various health 
      outcomes. However, epidemiological evidence has shown inconsistent result in 
      relation to type 2 diabetes mellitus (T2DM) and the association between long 
      working hours and pre-diabetes among non-diabetic adults remains largely 
      unexplored. We thus aimed to investigate whether long working hours were linked 
      with pre-diabetes as determined by glycated haemoglobin (HbA1c) level. DESIGN: 
      Cross-sectional survey. PARTICIPANTS: This study included 6324 men and 4001 women 
      without diabetes from the 2010 to 2017 Korean National Health and Nutrition 
      Examination Survey. PRIMARY OUTCOME MEASURES: The study outcome of interest was 
      pre-diabetes, defined as HbA1c values 5.7% to 6.4% RESULTS: Logistic regression 
      was performed to obtain the ORs for pre-diabetes according to categories of work 
      hour (40 hours/week, 41 to 52 hours/week, >52 hours/week), after adjusting for 
      relevant covariates. Of the 10 325 eligible participants, 2261 (34.4%) men and 
      1317 (31.0%) women had pre-diabetes. No statistically significant relationship 
      was found for women. In men, extended working hours (>52 hours per week) was 
      associated with an increased likelihood of pre-diabetes, after adjustment for 
      age, educational attainment, monthly household income, lifestyle related factors, 
      perceived stress, family history of diabetes, hypertension, hypercholesterolaemia 
      and other covariates (adjusted OR=1.22; 95% CI 1.03 to 1.46). In the subgroup 
      analysis by occupational categories, the association was only apparent among men 
      in blue-collar worker groups. CONCLUSION: Extended working hours were 
      significantly related to pre-diabetes in men, with no statistically significant 
      association observed for women. Further subgroup analysis by occupational 
      categories revealed that the increased odds of pre-diabetes associated with long 
      working hours was only apparent among male workers of blue-collar occupations and 
      shift workers.
CI  - (c) Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No 
      commercial re-use. See rights and permissions. Published by BMJ.
FAU - Baek, Yunseng
AU  - Baek Y
AD  - Premedical courses, Yonsei University College of Medicine, Seoul, Korea (the 
      Republic of).
FAU - Kim, Minseok
AU  - Kim M
AD  - Premedical courses, Yonsei University College of Medicine, Seoul, Korea (the 
      Republic of).
FAU - Kim, Gyu Ri
AU  - Kim GR
AUID- ORCID: 0000-0003-3624-3971
AD  - Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, 
      Korea (the Republic of) ecpark@yuhs.ac gyurikim@yuhs.ac.
FAU - Park, Eun-Cheol
AU  - Park EC
AUID- ORCID: 0000-0002-2306-5398
AD  - Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, 
      Korea (the Republic of) ecpark@yuhs.ac gyurikim@yuhs.ac.
AD  - Department of Preventive Medicine and Institute of Health Services Research, 
      Yonsei University College of Medicine, Seoul, Korea (the Republic of).
LA  - eng
PT  - Journal Article
DEP - 20191217
PL  - England
TA  - BMJ Open
JT  - BMJ open
JID - 101552874
RN  - 0 (Glycated Hemoglobin A)
SB  - IM
MH  - Adult
MH  - Age Distribution
MH  - Cross-Sectional Studies
MH  - Female
MH  - Glycated Hemoglobin/analysis
MH  - Humans
MH  - Logistic Models
MH  - Male
MH  - Middle Aged
MH  - Nutrition Surveys
MH  - Prediabetic State/*epidemiology
MH  - Republic of Korea/epidemiology
MH  - Risk Factors
MH  - Sex Distribution
MH  - *Social Class
MH  - *Work
PMC - PMC6937098
OTO - NOTNLM
OT  - Hba1c
OT  - glucose metabolism
OT  - pre-diabetes
OT  - working hours
COIS- Competing interests: None declared.
EDAT- 2019/12/20 06:00
MHDA- 2020/11/11 06:00
PMCR- 2019/12/17
CRDT- 2019/12/20 06:00
PHST- 2019/12/20 06:00 [entrez]
PHST- 2019/12/20 06:00 [pubmed]
PHST- 2020/11/11 06:00 [medline]
PHST- 2019/12/17 00:00 [pmc-release]
AID - bmjopen-2019-033579 [pii]
AID - 10.1136/bmjopen-2019-033579 [doi]
PST - epublish
SO  - BMJ Open. 2019 Dec 17;9(12):e033579. doi: 10.1136/bmjopen-2019-033579.