Table 2.
Variable | LS (n = 86) | MHS (n = 286) | p-value (unadjusted) |
---|---|---|---|
Cigarettes per day | 9.0 (1.7) | 24.3 (11.8) | <.01 |
Years smoking | 20.4 (10.4) | 21.9 (10.8) | .25 |
Carbon monoxide (ppm) | 15.5 (8.3) | 22.9 (13.0) | <.01 |
Cotinine (ng/ml) | 260.6 (178.4) | 352.5 (185.6) | <.01 |
Age at first cigarette | 19.0 (6.2) | 18.2 (5.7) | .27 |
Smoking within first 30 minutes (%)† | 71.9 | 90.2 | <.01 |
Mentholated cigarette (% yes)† | 88.1 | 79.2 | .07 |
Number of previous quit attempts | 4.5 (3.3) | 3.7 (3.0) | .03 |
Motivation to quit | 4.4 (0.6) | 4.4 (0.7) | .63 |
Contemplation Ladder | 7.6 (2.5) | 7.3 (3.0) | .42 |
Note: LS = 5-10 CPD; MHS = ≥ 11 CPD; ppm = parts per million
p values based on the chi-square statistic.