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. 2010 Oct 23;10:639. doi: 10.1186/1471-2458-10-639

Table 3.

Factors associated with the number of crashes in Poisson model

Variable Coefficient Standard Error P Value
Being a cigarette smoker 0.34 0.159 0.035
Being a waterpipe smoker 0.44 0.216 0.042
Driving duration in a day 0.18 0.066 0.007
Being diabetic 0.33 0.298 0.274
Gender -0.05 0.244 0.825
Model constant -2.13 0.478 0.000