Table 3. Work related variables.
| Overall | Bus Drivers | Rickshaw Drivers | p-value** | ||
| n = 505 | n = 278 | n = 227 | |||
| mean | 12.3 | 13.9 | 10.4 | ||
| Time of daytime work per day | O-SD | 4.0 | 3.3 | 3.9 | <0.001 |
| BC-SD | 2.5 | 1.8 | 1.4 | ||
| WC-SD | 3.4 | 3.1 | 3.7 | ||
| p-value* | <0.001 | 0.046 | 0.116 | ||
| mean | 21.6 | 24.8 | 18.8 | ||
| Time of nightime work per week | O-SD | 25.4 | 28.9 | 21.5 | 0.220 |
| BC-SD | 17.4 | 17.3 | 17.6 | ||
| WC-SD | 22.9 | 26.7 | 19.1 | ||
| p-value* | <0.001 | 0.060 | <0.001 | ||
| Time of public transportation driver | mean | 11.2 | 13.2 | 9.0 | |
| O-SD | 43.7 | 10.4 | 62.6 | 0.678 | |
| BC-SD | 35.0 | 5.8 | 53.5 | ||
| WC-SD | 39.3 | 9.6 | 56.3 | ||
| p-value* | <0.001 | <0.001 | 0.003 | ||
| Number of public transportation companies | mean | 1.4 | 1.6 | 1.2 | |
| O-SD | 1.0 | 1.3 | 0.6 | <0.001 | |
| BC-SD | 0.3 | 0.3 | 0.2 | ||
| WC-SD | 1.0 | 1.3 | 0.6 | ||
| p-value* | 0.001 | ∼1.000 | 0.245 | ||
| Number of Traffic Tickets on last 30 days | mean | 0.3 | 0.7 | 0.1 | |
| O-SD | 0.7 | 0.8 | 0.6 | 0.023 | |
| BC-SD | 0.5 | 0.5 | 0.6 | ||
| WC-SD | 0.6 | 0.7 | 0.5 | ||
| p-value* | <0.001 | 0.050 | 0.002 | ||
| Number of Traffic Tickets on last 6 months | mean | 0.7 | 1.4 | 0.1 | |
| O-SD | 1.2 | 1.5 | 0.3 | <0.001 | |
| BC-SD | 0.7 | 0.6 | 0.2 | ||
| WC-SD | 1.0 | 1.4 | 0.3 | ||
| p-value* | <0.001 | 0.413 | 0.009 | ||
| Number of Traffic Tickets on last 5 years | mean | 3.3 | 7.0 | 0.3 | |
| O-SD | 6.3 | 8.0 | 0.6 | <0.001 | |
| BC-SD | 7.2 | 8.3 | 0.5 | ||
| WC-SD | 4.4 | 6.6 | 0.6 | ||
| p-value* | <0.001 | <0.001 | 0.001 | ||
| Number of lifetime traffic tickets | mean | 5.4 | 13.0 | 0.5 | |
| O-SD | 12.9 | 17.1 | 1.8 | <0.001 | |
| BC-SD | 10.5 | 11.6 | 0.7 | ||
| WC-SD | 9.4 | 14.2 | 1.7 | ||
| p-value* | <0.001 | <0.001 | 0.050 | ||
| Monthly personal income | mean | 887.5 | 1011.2 | 741.9 | |
| O-SD | 905.8 | 772.1 | 1024.4 | 0.016 | |
| BC-SD | 374.9 | 431.0 | 207.6 | ||
| WC-SD | 850.4 | 695.0 | 1005.0 | ||
| p-value* | <0.001 | <0.001 | ∼1.000 | ||
| Monthly familiar income | mean | 1299.7 | 1300.9 | 1271.4 | |
| O-SD | 1203.6 | 791.4 | 1597.8 | 0.872 | |
| BC-SD | 524.4 | 422.1 | 699.0 | ||
| WC-SD | 1151.7 | 736.6 | 1537.4 | ||
| p-value* | ∼1.000 | ∼1.000 | ∼1.000 | ||
| Have health insurance | prevalence | 36.1% | 36.8% | 35.3% | |
| O-SD | 48.1% | 48.3% | 47.9% | 0.637 | |
| BC-SD | 21.6% | 26.8% | 11.5% | ||
| WC-SD | 45.6% | 44.6% | 46.9% | ||
| p-value* | <0.001 | 0.001 | ∼1.000 |
O-SD: Overall Standard Deviation, BC-SD: Between cluster standard deviation, WC-SD: Within cluster standard deviation.
*p-value for the null hypotheses that between cluster is equal to zero.
**p-value for the null hypotheses that prevalence of measured variable does not vary according to job.