. Author manuscript; available in PMC: 2024 Feb 15.

Published in final edited form as: Dev Psychopathol. 2022 Aug 15;34(5):1781–1802. doi: 10.1017/S0954579422000724

Appendix 6.

Association between biological sex and predictors and outcomes.

	Female biological sex
Predictors	b (SE)^a

Parent-reported sports participation (unstandardized)	−0.55 (0.06)^**
Twin-reported physical activity (unstandardized)	−0.54 (0.05)^**
Twin-reported positive friendship quality (unstandardized)	2.86 (0.09)^**
Outcomes	OR (95% CI)

Alcohol use cutoff (AUDIT)	0.73 (0.66–0.81)^**
Any drug use (DUDIT)	0.57 (0.48–0.66)^**
Any cigarette use	1.05 (0.97–1.14)
Any snuff use	0.57 (0.53–0.62)^**
Suicide attempt/self-harm	1.99 (1.82–2.18)^**

Based on 18.234 unique individiuals.

Statistically significant at p<0.05.

^**

Statistically significant at p<0.01.

Modeled via linear regression. One unit increase on the explanatory variable corresponds to the respective regression coefficient as measured by number of items endorsed.