Table 2.

Correlation matrix for objective measures of socio-economic status, subjective social status, and substance use variables (N = 1987)

Variable	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1. Years of education	—	−.03	.13**	.13**	.21**	.18**	−.06**	−.08**	−.17**	.09**	−.10**	.04	.01	−.07*	.18**
2. Employment status		—	−.34**	.07**	.06**	.11**	−.09**	−.14**	−.09**	−.01	.04	.01	.03	.03	−.04
3. Personal income			—	.14**	−.01	.04	.06**	.09**	.06*	.06**	−.04	.02	−.06**	−.04	.03
4. Household income				—	.25**	.35**	−.08**	−.07**	−.14**	.12**	.06*	.12**	.08**	.03	.03
5. Parents’ education					—	.27**	−.10**	−.11**	−.15**	.15**	.01	.12**	.11**	.03	.11**
6. Subjective social status						—	−.13**	−.14**	−17**	.08**	.01	.06**	.01	.01	.11**
7. Days smoked, past 30 days							—	.66**	.44**	.16**	.02	.14**	.13**	.03	−.12**
8. Cigarettes smoked per day								—	.59**	.09**	.11**	.11**	.08**	.06*	−.17**
9. Time to first cigarette									—	−.11**	.03	−.07**	−.01	.06*	−.18**
10. Days using alcohol, past 30 days										—	.06*	.72**	.20**	.09**	−.03
11. Drinks per drinking day											—	.44**	.03	.06*	−.08**
12. Heavy drinking days, past 30												—	.15**	.08**	−.08**
13. Days using marijuana, past 30													—	.39*	−.20**
14. CUDIT total scorea														—	−.15**
15. Age first MJ use															—

Note. CUDIT = Cannabis Use Disorder Identification Test; MJ = marijuana. Spearman’s rho correlations used for personal income, household income, employment status, parent’s education, subjective social status, time to first cigarette. All other correlations are Pearson’s r.

^aCUDIT scores are z-scores of CUDIT and CUDIT-R.

^*p < .05.

^**p <. 01.