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Poisson regression coefficients after removing DM and gender
| Variable | Coefficient | Standard Error | P Value |
| Being a cigarette smoker | 0.33 | 0.152 | 0.029 |
| Being a waterpipe smoker | 0.49 | 0.201 | 0.014 |
| Driving duration in a day | 0.15 | 0.064 | 0.022 |
| Model constant | -2.14 | 0.168 | 0.000 |
