title: Relationship Between Long Working Hours and Metabolic Syndrome Among Korean Workers.
abstract: OBJECTIVE
  This study investigated gender differences in the relationship between long working hours and metabolic syndrome.
  
  
  METHODS
  Data based on the Sixth National Health and Nutrition Examination Survey (2014) pertaining to a total of 1,145 paid workers were analyzed. Working hours were divided into three groups (40-51 hours/week, 52-59 hours/week, ≥ 60 hours/week). The relationship between working hours and metabolic syndrome was then analyzed after adjusting for general and occupational characteristics, using a multiple logistic regression model.
  
  
  RESULTS
  Working 40-51 hours per week was associated with the lowest metabolic syndrome among female workers (11.2%), whereas it was associated with the highest metabolic syndrome among male workers (28.0%). After adjusting for general and occupational characteristics, female workers working≥60 hours per week showed odds ratios of 2.21 [95% confidence interval (1.07, 4.57)], compared to those who worked 40-51 hours per week. However, no clear association between long working hours and metabolic syndrome was found among male workers.
  
  
  CONCLUSIONS
  The results suggest that working long hours, especially≥60 hours per week, is related to metabolic syndrome among female Korean workers.
authors.affiliation: Department of Nursing, Dong-A University, Busan, South Korea. Electronic address: joyu@dau.ac.kr.
authors.forename: Jungok
authors.initials: J
authors.lastname: Yu
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D024821:Metabolic Syndrome / Q000209:etiology*; D008875:Middle Aged; D009749:Nutrition Surveys; D011446:Prospective Studies; D056910:Republic of Korea; D012307:Risk Factors; D014940:Work Schedule Tolerance
keywords: employment; metabolic syndrome X; sex; work