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Table 3 Odds ratios and adjusted odds ratio of hypertension according to working period

From: Effect of shift work on hypertension: cross sectional study

Variables Crude ORa (95% CI) Adjusted ORb (95% CI)
Work schedule
 Day work 1.00 1.00
 Shift work 1.31 (0.98-1.75) 1.51 (1.11-2.06)
Work duration (years)
 0 (day work) 1.00 1.00
  ≤ 10 0.41 (0.21-0.78) 1.68 (0.73-3.89)
 10.1 – 20 1.15 (0.75-1.76) 1.48 (0.92-2.39)
  > 20 1.98 (1.43-2.73) 1.51 (1.08-2.11)
  1. aOdds ratio was calculated by logistic regression analysis
  2. bAdjusted odds ratio was calculated by multiple logistic regression analysis after adjusting for age, BMI, alcohol drinking, exercise and smoking