Table 5.6b Heroin admissions by usual route of administration and medication-assisted opioid therapy¹: TEDS 1997-2007 Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions. See Table 4.2a.]
Usual route of administration and medication-assisted opioid therapy¹	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
Usual route of administration
Injection	66.4	64.9	65.1	62.6	61.0	61.5	60.4	62.2	62.8	62.9	64.0
Inhalation	29.0	30.2	29.6	32.0	33.6	33.2	34.1	33.0	33.1	33.2	32.0
Smoking	2.7	2.7	3.0	2.8	2.5	2.5	2.5	2.3	2.2	2.1	2.3
Oral	1.2	1.4	1.4	1.7	1.9	1.9	2.1	1.8	1.3	1.2	1.3
Other	0.7	0.8	1.0	0.9	0.9	0.9	0.9	0.8	0.6	0.6	0.4
Total	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Medication-assisted opioid therapy,¹ by usual route of administration
Injection	44.8	44.4	43.4	42.3	40.3	38.6	34.6	32.4	30.1	28.5	27.6
Inhalation	22.8	32.2	29.5	29.1	31.0	32.1	30.1	28.0	28.1	29.8	27.7
Smoking	47.4	47.1	48.5	46.4	38.7	38.6	36.5	36.9	34.4	31.5	31.3
Oral	16.7	17.9	16.5	15.4	15.8	18.1	18.4	27.9	22.7	20.0	23.0
Other	36.5	35.5	36.6	28.0	31.5	32.8	31.7	35.7	30.1	34.8	21.2
Total	38.1	40.3	39.0	37.6	36.6	36.0	32.8	31.0	29.4	28.9	27.6
¹Medication-assisted opioid therapy with methadone or buprenorphine as part of the client's treatment.
SOURCE: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 10.6.08.