Table 2.
Baseline smoking and related risk behaviours of participants assigned to usual care and intervention groups
| Characteristic | Usual care group (n = 108) | Intervention group (n = 55) |
|---|---|---|
| Smoking* |
|
|
| Average number of cigarettes smoked per day |
15 (10–25) |
15 (11–25) |
| Years since started smoking |
19.0 (10.9–26.7) |
24.2 (15.0–31.6) |
| Age first started smoking |
16 (14–18) |
17 (15–19) |
| Nicotine dependency score ≤5 [26] |
49/102 (48%) |
24/53 (45%) |
| Self-reported desire to quit |
63/105 (60%) |
28/53 (53%) |
| Other drug use |
|
|
| Current alcohol drinker |
77/105 (73%) |
41/53 (77%) |
| Smoked marijuana within the last month |
37/105 (35%) |
14/52 (27%) |
| Ever used other illicit drugs | 17/104 (16%) | 8/53 (15%) |
Data are number (%) or median (interquartile range).
*Missing data for average number of cigarettes smoked per day: 4 usual care and 6 intervention; years since started smoking: 4 usual care and 2 intervention; age first started smoking: 4 usual care and 2 intervention.