Table 1.3b Admissions aged 12 and older by gender and age at admission: TEDS 1998-2008 and U.S. population aged 12 and older 2008 Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions (excl. Puerto Rico).]
Gender and age at admission	TEDS admissions												U.S. pop. aged 12 and older1
	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008		2008
Gender
Male	70.5	70.5	70.1	69.9	69.9	69.1	68.5	68.2	68.2	67.5	67.9		49.0
Female	29.5	29.5	29.9	30.1	30.1	30.9	31.5	31.8	31.8	32.5	32.1		51.0
Total	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0		100.0
Age at admission
12 to 17 years	8.2	8.0	7.9	8.2	8.4	8.5	8.1	7.7	7.5	7.5	7.5		9.8
18 to 19 years	4.0	4.1	4.2	4.2	4.1	4.1	4.2	4.1	4.0	4.0	4.1		3.4
20 to 24 years	10.4	11.0	11.7	12.5	13.0	13.4	14.1	14.4	14.2	14.2	14.4		8.3
25 to 29 years	13.3	12.5	11.8	11.4	11.3	11.6	12.4	13.2	13.9	14.4	14.8		8.3
30 to 34 years	17.1	16.0	15.2	14.6	13.8	13.2	12.5	11.9	11.3	11.2	11.3		7.7
35 to 39 years	18.5	18.3	17.9	17.1	16.2	15.2	14.2	13.6	13.1	12.5	11.7		8.2
40 to 44 years	13.7	14.3	14.7	14.8	14.9	15.1	14.9	14.5	14.1	13.3	12.6		8.4
45 to 49 years	7.9	8.5	8.9	9.3	9.8	10.1	10.3	10.7	11.2	11.5	11.5		9.0
50 to 54 years	3.6	4.0	4.3	4.6	4.9	5.2	5.4	5.8	6.3	6.7	7.1		8.4
55 to 59 years	1.8	1.9	1.9	1.9	2.1	2.2	2.3	2.5	2.8	3.0	3.3		7.3
60 to 64 years	0.8	0.8	0.8	0.9	0.9	0.9	0.9	1.0	1.0	1.1	1.2		5.9
65 years and older	0.7	0.7	0.7	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6		15.3
Total	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0		100.0
1  Excludes Alaska and Georgia, which did not report TEDS data for 2008.
n/a  Not available.
SOURCES: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 8.31.09.  U.S. population: U.S. Bureau of the Census. Annual State Resident Population Estimates for 6 Race Groups by Age, Sex, and Hispanic Origin: April 1, 2000 to July 1, 2008 (SC-EST2008-ALLDATA6, rel. May 14, 2009).