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Table 4 Poisson regression coefficients after removing DM and gender

From: Association of waterpipe smoking and road traffic crashes

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