Of the approximately 78,000 admissions aged 12 to 17 in the 26 States that reported presence or absence of co-occurring problems to SAMHSA's Treatment Episode Data Set (TED, about 16,000 (21%) were admissions with a co-occurring psychiatric problem in addition to an alcohol and/or drug problem. Adolescent admissions with co-occurring disorders were more likely to be female than adolescent admissions for only substance use disorders (38% vs. 28%). Nearly three-quarters of adolescent admissions with co-occurring disorders were White (72%) compared to half of adolescent admissions for only substance use disorders (51%). Criminal justice system referrals for treatment were the most common source of referral for both adolescent admissions with co-occurring disorders (48%) and adolescent admissions for only substance use disorders (57%).
Based on SAMHSA's 2004 National Survey on Drug Use and Health, 1.4 million persons aged 12 or older (0.6% of the population) had used methamphetamine in the past year, and 600,000 persons (0.2% of the population) had used methamphetamine in the past month. Although the number of past year and past month methamphetamine users did not change significantly between 2002 and 2004, the number of past month methamphetamine users who met criteria for abuse or dependence on one or more illicit drugs in the past year increased from 164,000 (27.5% of past month methamphetamine users) in 2002 to 346,000 (59.3%) in 2004. The average age of first use among new methamphetamine users was 18.9 years in 2002, 20.4 years in 2003, and 22.1 years of age in 2004.
According to SAMHSA's 2003 National Survey on Drug Use & Health, about 2.1 million persons aged 12 or older (0.9%) reported using Ecstasy at least once in the past year. Almost all (97.5%) of the persons age 12 or older who used Ecstasy in the past year also reported past year use of alcohol compared with 65.2% of those who had not used Ecstasy in the past year. Over 90% of past year Ecstasy users reported also using other types of illicit drugs in the past year compared with 13.8% of the those who did not use Ecstasy in the past year. About 22.8% of the past year Ecstasy users used one other illicit drug, 50.3% used two to four other illicit drugs, and 17.9% used five or more illicit drugs during the past year.
Based on SAMHSA's 2002 and 2003 National Surveys on Drug Use & Health (NSDUH), an annual average of 354,000 persons (0.2%) aged 12 or older used a needle to inject heroin, cocaine, methamphetamines, or other stimulants during the past year. NSDUH data on needle sources indicated that 140,000 (39.5%) past year injection drug users bought a needle from a pharmacy the last time they injected drugs and 59,000 (16.7%) obtained a needle from a needle exchange program. About 73,000 (20.5%) were given their needle or stole it from another person and another 24,000 (6.8%) were given their needle or stole it from a location. The last time injection drug users used a needle for injecting drugs, 13.1% of past year injection drug users knew or suspected someone else had used the needle before them and 18.1% used a needle that someone used after them. An estimated 64.4% of past year injection drug users did not clean the needle with bleach before the last time they had used one to inject drugs.