Table 2.
Prevalence Rates of Categorical Measures of Tobacco Use by Group and Summary of Logistic Regressions
| ADHD-Ext | ADHD-Only | Comparison | ADHD-Ext > C | ADHD-only > C | ADHD-Ext > ADHD- Only |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | OR (95%CI)a | OR (95%CI)a | OR (95%CI)a | ||
| Time 4 | ||||||||||
| Any tobacco use | 76 | 84.4 | 21 | 75.0 | 65 | 69.9 | 2.29* (1.04–5.08) | 1.14 (0.42–3.07) | 2.01 (0.70–5.80) | |
| Regular tobacco use | 61 | 67.8 | 12 | 41.4 | 39 | 41.9 | 2.68** (1.39–5.16) | 1.00 (0.42–2.39) | 2.82* (1.17–6.81) | |
| Time 5 | ||||||||||
| Any tobacco use | 71 | 81.6 | 18 | 72.0 | 58 | 63 | 2.76* (1.28–5.96) | 1.38 (0.50–3.78) | 2.00 (0.69–5.79) | |
| Regular tobacco use | 55 | 61.1 | 12 | 41.4 | 34 | 36.6 | 2.61* (1.34–5.07) | 1.37 (0.55–3.42) | 1.90 (0.76–4.77) | |
| Time 6 | ||||||||||
| Any tobacco use | 59 | 80.8 | 14 | 70.0 | 48 | 57.1 | 2.46* (1.12–5.40) | 1.41 (0.48–4.15) | 1.74 (0.55–5.51) | |
| Regular tobacco use | 38 | 42.2 | 10 | 34.5 | 30 | 32.3 | 1.62 (0.80–3.28) | 1.58 (0.58–4.30) | 1.02 (0.37–2.83) | |
Note. ADHD-Ext = ADHD-externalizers; ADHD-Only = ADHD only; C=Comparison group; OR=odds ratio.
a
Odds ratios were from logistic regressions controlling for age, gender, and current stimulant medication use.
*
p < .05,
**
p < .01