The TEDS is an admission-based program and, as such, the number of admissions to substance abuse treatment does not necessarily represent the number of individuals seeking treatment since one individual may have more than one treatment admission during a calendar year. Among the summary findings reported here are that five substances accounted for 96 percent of all TEDS admissions during 2003: alcohol, opiates, marijuana, cocaine, and stimulants. Alcohol was reported as the primary substance of abuse for 42 percent of all TEDS treatment admissions in 2003; 44 percent of these primary alcohol admissions also reported other substances of abuse. TEDS admissions for primary heroin abuse accounted for 15 percent of 2003 admissions, up from 12 percent in 1993. Primary marijuana TEDS admissions were also up from 7 percent in 1993 to 15 percent in 2003, while TEDS admissions for primary cocaine abuse dropped from 17 percent in 1993 to 14 percent in 2003. Methamphetamine and other stimulant TEDS admissions increased from 2 percent in 1993 to 7 percent in 2003. Demographic information on TEDS admissions is offered in each drug category and the type of service rendered by treatment centers are recalled and include ambulatory treatment, detoxification, and residential treatment. Tables