Table 2:
Association of number of cigarettes smoked per day, heavy cigarette smoking, and increase in cigarettes smoked from the previous 30 days with past 7-days use of alcohol, cannabis, stimulants, amphetamines, and heroine (N=240)
| Alcohol d (Adjusted odds ratio, 95% CI) | Cannabis d (Adjusted odds ratio, 95% CI) | Crack/cocaine d (Adjusted odds ratio, 95% CI) | Heroin d (Adjusted odds ratio, 95% CI) | Methamphetamine d (Adjusted odds ratio, 95% CI) | |
|---|---|---|---|---|---|
|
| |||||
| Number of cigarettes smoked per day a | 1.00 (0.98,1.02) | 0.99 (0.97,1.01) | 1.00 (0.99,1.02) | 1.02 (0.98,1.05) | 1.02 (1.00,1.03) * |
| Heavy cigarette smoking b | 0.97 (0.64,1.48) | 0.81 (0.54,1.22) | 0.89 (0.55,1.45) | 1.44 (0.74,2.78) | 2.02 (1.46,2.79) * |
| Increase in number of cigarettes from the previous month c | 1.04 (0.96,1.12) | 0.98 (0.91,1.04) | 0.99 (0.93,1.05) | 1.02 (0.99,1.06) | 1.06 (1.01,1.12) * |
a
Odds ratios correspond to an increase in 5 cigarettes per day
b
Defined as smoking ≥ 10 cigarettes per day versus not
c
Proportion who had ≥10 cigarette increases from the previous 30-days among those who had 2 or more consecutive visits after the baseline visit
d
Self-reported substance use in the past 7-days
e
Models were adjusted for age, education, and race/ethnicity
*
p<0.05