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Table 4 Associations between weekly working hours and high serum gamma-glutamyltransferase levels

From: Association between long working hours and serum gamma-glutamyltransferase levels in female workers: data from the fifth Korean National Health and Nutrition Examination Survey (2010-2011)

Working hours/week Crude Model 1* Model 2
OR 95%CI§ OR 95%CI§ OR 95%CI§
 ≤29 1.39 0.99–1.94 1.51 1.03–2.19 1.53 1.05–2.24
 30–51 1   1   1  
 ≥52 1.78 1.30–2.44 1.52 1.07–2.15 1.56 1.10–2.23
  1. *Adjusted for general characteristics (i.e., age, BMI, alcohol consumption, smoking status and regular walking).
  2. Adjusted for general and occupational characteristics (i.e., Model 1 + working type, and employment status).
  3. Odds ratio, §95% confidence interval.