. Author manuscript; available in PMC: 2021 Mar 19.

Published in final edited form as: J Drug Issues. 2020 Jul 16;50(4):538–549. doi: 10.1177/0022042620941812

Table 2.

Predicting Relative Changes in Later Adulthood Problems Related to Substance Use (Age 27) from Early Adulthood Self-Perception (Age 19)

	Problems Due to Alcohol & Marijuana Use (Age 27)
	β entry	β final	ΔR²	Total R²
Step I.
Gender (1=M; 2=F)	−.34	−.29
Total Family Income (Age 13)	.11	.02
Statistics for Step			.010	.010
Step II.
Substance Use Problems (Age 19)	.31^**	.28^**	.188^**	.198^**
Step III.
Self-Perception (Age 19)	−.09^*	−.09^*	.036^**	.234^**

Note.

^***

p < .001.

^**

p < .01.

p < .05.