|  |  | Age stratification | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Total |  | 19–40 years |  | 41–60 years | |||||||
OR | 95%CI | Â | OR | 95%CI | Â | OR | 95%CI | ||||
Work schedule | |||||||||||
 Day time (06 am-06 pm) | 1 |  |  |  | 1 |  |  |  | 1 |  |  |
 Evening time (02 pm-12 am) | 1.26 | (0.99 | 1.62) |  | 1.23 | (0.84 | 1.80) |  | 1.37 | (0.99 | 1.89) |
 Fixed overnight (09 pm-08 am) | 3.30 | (2.23 | 4.86) |  | 3.74 | (1.80 | 7.77) |  | 3.19 | (1.99 | 5.11) |
 Night included regular rotation | 1.34 | (1.01 | 1.79) |  | 1.16 | (0.75 | 1.80) |  | 1.51 | (1.03 | 2.20) |