Independent variables Odd ratio 95% confidence interval p-value
Factors      
Low nutritional status 0.63 [0.18 ; 2.18] 0.470
Alcohol withdrawal 0.59 [0.12 ; 2.87] 0.517
Baseline number of cigarettes / day 1.03 [0.99 ; 1.07] 0.130
Severity index for legal area 1.19 [0.87 ; 1.62] 0.271
Control variables      
Age 0.97 [0.91 ; 1.03] 0.315
Gender (ref category: men) 2.78 [0.75 ; 10.22] 0.125
Table 4: Logistic regression for the risk of relapse among 117 patients entering a detoxification program, by gender and primary substance.