Appendix 8.
Association between protective factors and substance use and self-harm items across the three models among complete case dataset.
| OR (95% CI) | |||||
|---|---|---|---|---|---|
|
|
|||||
| Alcohol Use Cutoff (AUDIT) | Any Drug Use (DUDIT) | Any Cigarette Use | Any Snuff Use | Suicide attempt/self-harm | |
|
| |||||
| Co-twin control with adjustment for psychopathology a | |||||
| Sports participation (parent-reported) | 0.88 (0.69, 1.14) | 1.11 (0.72, 1.71) | 1.11 (0.88, 1.40) | 1.45 (1.10, 1.91)** | 1.00 (0.79, 1.27) |
| Physical activity (twin-reported) | 0.96 (0.78, 1.19) | 1.05 (0.76, 1.44) | 0.92 (0.76, 1.11) | 1.08 (0.88, 1.33) | 1.05 (0.88, 1.26) |
| Positive friendship quality (twin-reported) | 1.03 (0.84, 1.28) | 0.89 (0.66, 1.21) | 0.96 (0.81, 1.15) | 1.02 (0.85, 1.24) | 0.97 (0.81, 1.14) |
Note: Includes adjustment for biological sex. All outcomes are dichotomous. Based 3,924 unique individuals.
*
Statistically significant at p<0.05.
**
Statistically significant at p<0.01.
a
Adjusted for A-TAC summed scores for concentration/attention, impulsivity/activity, opposition, conduct, psychosis, and eating symptomology.