Table 4.
Likelihood of Substance Use by ADHD and CD Symptom Counts
| Tobacco Use | Alcohol Use | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| AOR | 95%CI | AHR | 95%CI | AOR | 95%CI | AHR | 95%CI | ||
| Inattentive count | Main effect a | 1.15 | (1.09, 1.21) | 1.14 | (1.07, 1.21) | 1.07 | (1.01, 1.14) | 1.07 | (1.02, 1.11) |
| Full model b | 1.10 | (1.02, 1.19) | 1.08 | (1.01, 1.17) | 1.08 | (1.01, 1.15) | 1.08 | (1.03, 1.13) | |
| Hyperactive-impulsive count | Main effect a | 1.13 | (1.06, 1.21) | 1.11 | (1.01, 1.22) | 1.03 | (0.96, 1.11) | 1.02 | (0.97, 1.08) |
| Full model b | 1.02 | (0.93, 1.12) | 1.00 | (0.90, 1.12) | 0.96 | (0.89, 1.05) | 0.96 | (0.60, 1.02) | |
| CD count | Main effect a | 1.48 | (1.21, 1.80) | 1.33 | (1.08, 1.66) | 1.15 | (0.95, 1.39) | 1.13 | (0.99, 1.28) |
| Full model b | 1.31 | (1.06, 1.62) | 1.18 | (0.97, 1.43) | 1.09 | (0.86, 1.38) | 1.10 | (0.94, 1.29) | |
ADHD = attention-deficit/hyperactivity disorder, CD = conduct disorder, AOR = adjusted odds ratios, AHR = adjusted hazard ratios
All models adjusted for age, gender, race/ethnicity, poverty status, household smoke (tobacco outcome)
a
The “single main effect” models separately examine each independent variable (i.e., the main effect model for inattentive symptom counts does not include hyperactive-impulsive and CD symptom counts, etc.)
b
The “full model” included all independent variables (inattentive, hyperactive-impulsive, and CD symptom counts) to examine the effect of each in the presence of the others.