Table 1.

Lifetime substance use at each wave by substance of initiation.

	Overall		Inhalants First		Alcohol First		Marijuana First		Cocaine First		Injectables First
	%	n	%	n	%	n	%	n	%	n	%	n
Inhalant W1	5.74	355	75.32	182	3.42	103	8.53	140	32.91	59	48.27	4
Inhalant W2	7.35	346	99.03	194	4.55	103	10.55	134	40.77	46	51.72	5
Alcohol W1	55.71	3,560	67.67	179	66.5	2,105	81.24	1,430	91.3	157	83.18	9
Alcohol W2	64.11	3,062	76.67	156	79.44	1,886	87.9	1,179	92.91	107	91.54	10
Alcohol W3	86.45	4,190	88.17	167	100	2,499	93.01	1,214	94.29	116	86.48	6
Marijuana W1	25.7	1,578	54.79	128	17.33	520	70.61	1,184	93.09	139	90.36	8
Marijuana W2	33.45	1,567	61.56	119	22.49	512	95.46	1,263	88.7	100	86.55	9
Marijuana W3	55.79	2,649	81.87	149	37.86	911	98.76	1,282	93.83	114	86.48	6
Cocaine W1	3.49	210	16.66	41	1.17	35	3.33	58	98.64	162	82.28	8
Cocaine W2	4.43	210	27.29	49	2.13	53	6.67	87	94.34	108	78.17	8
Cocaine W3	13.13	595	40.34	64	8.5	197	20.75	266	96.39	117	78.50	5
Injectable W1	0.66	36	3.35	6	0.21	5	0.52	9	11.06	20	91.54	10
Injectable W2	1.06	46	8.73	15	0.5	11	1.31	18	14.3	16	92.37	11
Injectable W3	1.92	89	8.23	13	1.1	27	2.74	36	14.45	19	100	8

Note: Unweighted sample sizes and weighted percentages are reported.