Minors' usual source of cigarettes in 1999, by frequency of smoking*
| Usually bought in a store % (±95% CI) | Usually bought in a vending machine % (±95% CI) | Usually gave someone else money to buy % (±95% CI) | Usually borrowed from someone % (±95% CI) | Usually stole % (±95% CI) | Usually obtained in some other way % (±95% CI) | |
|---|---|---|---|---|---|---|
| *Among high school students who were current smokers (smoked cigarettes on one or more of the 30 days preceding the survey) and were under age 18 years (unweighted n=3631). Data are from the 1999 Youth Risk Behavior Survey. | ||||||
| †Test for trend was calculated from a logistic regression model, controlling for sex, grade, and race/ethnicity, in which the independent variable (number of days of use) was treated as a continuous variable (NS, not significant). | ||||||
| Days smoked in past month | ||||||
| 1–2 | 6.7 (3.1) | 0.2 (0.3) | 6.8 (2.7) | 66.7 (8.2) | 3.2 (2.7) | 16.5 (5.7) |
| 3–5 | 11.1 (5.5) | 0.2 (0.3) | 14.0 (5.5) | 60.6 (7.8) | 6.4 (3.0) | 7.8 (2.6) |
| 6–9 | 19.7 (12.3) | 2.9 (2.0) | 26.6 (9.1) | 39.3 (10.4) | 5.6 (4.0) | 5.8 (3.8) |
| 10–19 | 26.3 (9.3) | 0.6 (0.7) | 38.8 (9.2) | 21.0 (4.9) | 0.6 (0.6) | 12.7 (7.8) |
| 20–29 | 31.4 (10.3) | 1.3 (1.4) | 50.8 (8.4) | 9.1 (4.0) | 4.6 (4.2) | 2.8 (1.7) |
| All 30 | 36.8 (8.2) | 1.3 (1.7) | 42.0 (7.7) | 3.3 (1.6) | 5.5 (2.0) | 11.1 (3.1) |
| Linear trend (p)† | <0.001 | NS | <0.001 | <0.001 | NS | NS |