Table 3.
Step | Predictors | B | Odds ratio | 95 % CI | p |
---|---|---|---|---|---|
1 | Dependence length | 0.17 | 1.19 | 1.08–1.30 | 0.000 |
2 | Duration of observation | 0.38 | 1.46 | 1.17–1.82 | 0.001 |
3 | Clean cocaine urinalyses | 29.64 | 7.47E+12 | 46,674.13–1.20E+21 | 0.002 |
Statistic: Chi square 99.33, df 3, p = 0.000 correct classified 90.8 %