Table 6 Comparison between the levels of the variables performance of treatment tasks and coping with withdrawal symptoms in Cox regressions

Performance of treatment tasks

.003

Ineffective - Moderate

1.109

.001

3.032

1.601 - 5.743

Effective - Moderate

.321

.231

1.378

.815 - 2.330

Coping with withdrawal symptoms

.051

Ineffective - Moderate

.880

.016

2.410

1.178 - 4.930

Effective - Moderate

.206

.409

1.229

.753 - 2.006