Table 4.

Linear Regression of Time to Graduation on Follow Up Personal Income

Measure	B	SE	t	ΔR2
Step 1				.02**
High School Family Income	0.41	0.05	3.02**
Step 2				.01
Hispanic	−0.45	0.34	−1.32
Asian	−0.05	0.31	−0.15
African American/Other	−0.74	0.35	−2.10*
Gender	−0.05	0.22	−0.21
Step 3				.03**
Binge Drinking	−0.02	0.01	−0.00
Marijuana Use	−0.99	0.28	−3.94**
Other Drug Use	0.13	0.42	0.32
Step 4				.01*
Graduation Status	−0.35	0.16	−2.11*

Note:

^*p<.05

^**p<.01.

All ethnicities are reported relative to White participants. The substance use variables listed in step 3 measured past three month use assessed in the follow up survey.