TABLE 1.

Descriptive statistics and correlation matrix of study variables

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
Covariates
1. Race (1 = White)	–	0.06	0.20	−0.05	−0.02	−0.03	0.01	−0.10	−0.02	−0.04	0.05	−0.09	0.01	0.13	0.11	0.18	0.13
2. Sex (1 = Male)		–	0.06	0.08	0.21	0.22	0.28	0.22	0.00	0.03	0.08	0.04	0.01	0.04	0.05	0.08	0.03
3. Socioeconomic status			–	0.03	0.05	0.03	0.01	0.08	0.03	−0.02	0.02	−0.07	0.00	0.18	0.24	0.30	0.21
Sensation seeking
4. Age 16				–	0.52	0.55	0.49	0.26	−0.10	−0.23	−0.17	−0.29	−0.20	0.14	0.17	0.14	−0.04
5. Age 17					–	0.63	0.60	0.49	−0.14	−0.17	−0.08	−0.06	−0.05	0.17	0.20	0.09	0.13
6. Age 18						–	0.67	0.58	−0.14	−0.15	−0.06	−0.14	−0.06	0.07	0.15	0.09	0.09
7. Age 19							–	0.64	−0.16	−0.12	0.00	−0.11	−0.08	0.16	0.18	0.16	0.17
8. Age 20								–	−0.06	−0.04	0.02	−0.12	−0.05	0.07	0.10	0.14	0.14
Premeditation
9. Age 16									–	0.46	0.45	0.30	0.55	−0.13	−0.13	−0.03	0.10
10. Age 17										–	0.50	0.36	0.43	−0.10	−0.09	0.03	0.10
11. Age 18											–	0.44	0.47	−0.09	−0.10	−0.04	0.07
12. Age 19												–	0.53	−0.19	−0.10	−0.09	−0.05
13. Age 20													–	0.01	−0.10	−0.06	−0.04
Heavy episodic drinking
14. Age 17														–	0.67	0.51	0.49
15. Age 18															–	0.63	0.52
16. Age 19																–	0.76
17. Age 20																	–
Mean	0.72	0.49	8.20	2.56	2.58	2.62	2.47	2.51	3.35	3.39	3.41	3.45	3.48	0.49	0.78	1.29	1.52
Standard deviation	0.45	0.50	1.78	0.92	0.91	0.90	0.93	0.92	0.65	0.65	0.64	0.62	0.60	1.01	1.22	1.54	1.58
Skew	−0.96	0.04	−1.19	−0.24	−0.20	−0.18	−0.04	−0.22	−0.70	−0.73	−0.77	−0.71	−0.76	2.08	1.38	0.68	0.47

Note: Bolded values indicate significant correlations at the p < 0.05 level.