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Table 4 Combined effects of age and daily working hours for overweight or obesity based on BMI and PBF criterion in women

From: Long working hours and overweight and obesity in working adults

Category N (%) Odds ratios (95 % Confidence Intervals)
BMI PBF
Crude Adjusted* Crude Adjusted*
Group1 (Age < 50 and working hours < 9) 263 (37.73) 1 1 1 1
Group2 (Age ≥ 50 and working hours < 9) 292 (41.89) 1.69(1.11–2.56) 1.68(1.04–2.73) 2.66(1.67–3.91) 2.87(1.75–4.69)
Group3 (Age < 50 and working hours ≥ 9) 87 (12.48) 2.39(0.94–6.03) 2.34(0.77–7.11) 2.60(1.32–8.90) 2.73(1.19–12.06)
Group4 (Age ≥ 50 and working hours ≥ 9) 55 (7.89) 3.82(1.31–11.14) 3.56(1.03–12.37) 3.43(1.23–9.54) 3.90(1.05–11.00)
  1. *Adjusted for confounding factors except for the targeted variable itself. The confounding factors involve age, educational level, smoking, alcohol consumption, working hours, daily occupational sitting time, and sleeping hours (h/day). Working hours and age group were dichotomized at the median