Table 1.3a. Admissions aged 12 and older, by gender and age at admission: 1999-2009 Number and average age at admission
[Based on administrative data reported to TEDS by all reporting States and jurisdictions (excl. Puerto Rico).]
Gender and age at admission	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
Total	1,715,336	1,749,709	1,767,424	1,885,446	1,857,910	1,804,631	1,888,992	1,903,565	1,902,716	1,993,331	1,960,676
Gender
Male	1,208,724	1,223,989	1,233,233	1,316,584	1,284,153	1,235,189	1,288,655	1,294,731	1,289,729	1,350,279	1,335,218
Female	504,806	522,296	531,986	568,339	573,367	568,732	599,849	608,404	612,447	642,667	625,089
No. of admissions	1,713,530	1,746,285	1,765,219	1,884,923	1,857,520	1,803,921	1,888,504	1,903,135	1,902,176	1,992,946	1,960,307
Age at admission
12 to 17 years	137,596	137,769	145,369	157,744	156,976	146,353	145,009	142,887	141,289	152,182	149,276
18 to 19 years	69,627	72,815	73,444	77,586	76,443	75,536	77,520	77,091	76,546	81,795	82,266
20 to 24 years	188,581	204,743	221,410	245,651	249,301	253,973	271,402	274,735	272,599	287,976	291,582
25 to 29 years	213,835	206,712	201,483	213,942	216,313	223,457	250,194	266,819	275,022	294,419	298,138
30 to 34 years	274,559	266,266	257,669	259,362	244,413	225,298	224,243	215,672	212,648	224,859	228,443
35 to 39 years	314,697	313,171	301,989	304,786	281,905	257,076	256,743	248,726	237,177	231,648	212,679
40 to 44 years	244,952	257,131	262,429	281,723	279,820	268,548	274,396	264,858	253,780	249,069	228,041
45 to 49 years	144,957	155,887	163,585	185,663	188,147	186,761	202,351	211,338	217,888	228,915	222,101
50 to 54 years	68,581	75,104	80,679	92,207	95,775	98,559	110,320	118,107	126,854	141,219	142,919
55 to 59 years	32,101	33,516	33,276	39,229	41,056	41,792	47,245	53,207	56,475	64,941	66,963
60 to 64 years	14,198	14,762	15,073	16,413	16,627	16,515	18,129	18,735	20,700	23,467	25,079
65 years and older	11,652	11,833	11,018	11,140	11,134	10,763	11,440	11,390	11,738	12,841	13,189
No. of admissions	1,715,336	1,749,709	1,767,424	1,885,446	1,857,910	1,804,631	1,888,992	1,903,565	1,902,716	1,993,331	1,960,676
Average age at admission	33.8 yrs	33.9 yrs	33.8 yrs	33.9 yrs	34.0 yrs	34.0 yrs	34.1 yrs	34.2 yrs	34.4 yrs	34.4 yrs	34.3 yrs
SOURCE: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 11.03.10.