Table 1.
Cox proportional hazard models predicting dropout
| Hazard ratio | 95% Confidence interval | p | |
|---|---|---|---|
| Original Model | |||
| Med | 2.48 | .62 – 9.99 | .200 |
| Age | 1.19 | .55 – 2.55 | .660 |
| GUD | 3.66 | .12 – 109.10 | .454 |
| PUD | 1.02 | .94 – 1.12 | .593 |
| RMPI | 1.23 | 1.04 – 1.45 | .016 |
| AgexMed | .87 | .56 – 1.35 | .533 |
| GUDxMed | .30 | .03 – 3.36 | .328 |
| PUDxMed | .997 | .95 – 1.05 | .910 |
| RMPIxMed | .86 | .77 – .97 | .014 |
|
| |||
| Final Model | |||
| Med | 2.61 | .91 – 7.49 | .074 |
| RMPI | 1.22 | 1.06 – 1.42 | .008 |
| RMPIxMed | .87 | .78 – .96 | .007 |
|
| |||
| Placebo Only | |||
| RMPI | 1.06 | .997 – 1.12 | .062 |
|
| |||
| Topiramate Only | |||
| RMPI | .917 | .84 – .999 | .048 |
Note. Med = medication condition (1 = placebo, 2 = topiramate), GUD = grams per use day, PUD = percent use days, RMPI = Rutgers Marijuana Problem Index.