Table 1.
Covariate | Estimate (SD) | p-value |
---|---|---|
Intercept | 2.53 (0.04) | <.0001 |
Intercept*time | 0.02 (0.01) | 0.0007 |
Craving | 0.24 (0.04) | <.0001 |
Craving*time | 0.05 (0.01) | <.0001 |
Lapse | 0.28 (0.08) | 0.0005 |
Baseline dependence | 0.08 (0.02) | <.0001 |
Intercept, craving and their interactions with time are shown in the constant effects table because these terms were chosen to be of parametric forms in model selection procedure of TVEM. The corresponding plots are the left and middle panels of Fig. 2. The coefficient of NA is not included in this table because it was decided by the model selection procedure of TVEM to be a nonparametric curve with two knots. The inference for NA can be drawn from the right panel of Fig. 2.