Table 4.

Logistic regression models examining Level of Physical Dependence as a predictor of daily smoking.

Effect	OR	Lower 95% CI	Upper 95% CI
Model 1 — Unadjusted
Level 1 PD vs. Level 0	2.32	0.41	13.03
Level 2 PD vs. Level 0	11.67	2.32	58.59
Level 3 PD vs. Level 0	18.44	4.13	82.22
Model 2 — Adjusted for gender and age
Level 1 PD vs. Level 0	2.09	0.36	12.10
Level 2 PD vs. Level 0	11.38	2.18	59.32
Level 3 PD vs. Level 0	19.61	4.23	90.96
Gender (female vs. male)	0.93	0.44	1.96
Age (year)	1.58	1.18	2.13