Table 2.2 Admissions by alcohol/drug co-abuse: TEDS 1996-2006 Number and percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions. See Table 4.2a.]
Alcohol/drug co-abuse	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
	Number
Total	1,643,731	1,607,957	1,712,268	1,725,885	1,759,417	1,781,018	1,901,007	1,868,340	1,892,154	1,861,209	1,800,717
Drug primary	770,201	773,135	834,622	854,663	900,916	943,905	1,022,282	1,038,238	1,077,977	1,083,475	1,043,589
Drug only	403,986	413,056	452,759	473,270	520,083	554,367	605,313	629,441	665,106	681,379	665,864
Drug w/secondary alcohol	366,215	360,079	381,863	381,393	380,833	389,538	416,969	408,797	412,871	402,096	377,725
Alcohol primary	832,844	796,674	828,252	824,641	813,134	788,522	813,719	776,257	755,068	731,098	714,032
Alcohol only	473,536	445,699	462,692	461,532	454,447	433,716	448,999	431,035	418,006	403,403	393,810
Alcohol w/secondary drug	359,308	350,975	365,560	363,109	358,687	354,806	364,720	345,222	337,062	327,695	320,222
No primary substance reported	40,686	38,148	49,394	46,581	45,367	48,591	65,006	53,845	59,109	46,636	43,096
	Percent distribution
Total	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Drug primary	46.9	48.1	48.7	49.5	51.2	53.0	53.8	55.6	57.0	58.2	58.0
Drug only	24.6	25.7	26.4	27.4	29.6	31.1	31.8	33.7	35.2	36.6	37.0
Drug w/secondary alcohol	22.3	22.4	22.3	22.1	21.6	21.9	21.9	21.9	21.8	21.6	21.0
Alcohol primary	50.7	49.5	48.4	47.8	46.2	44.3	42.8	41.5	39.9	39.3	39.7
Alcohol only	28.8	27.7	27.0	26.7	25.8	24.4	23.6	23.1	22.1	21.7	21.9
Alcohol w/secondary drug	21.9	21.8	21.3	21.0	20.4	19.9	19.2	18.5	17.8	17.6	17.8
No primary substance reported	2.5	2.4	2.9	2.7	2.6	2.7	3.4	2.9	3.1	2.5	2.4
SOURCE: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 10.9.07.