Issue 4, 2006 |
Age of First Use among Admissions for Drugs: 1993 and 2003 |
In Brief |
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The age when people first use drugs is considered an important marker in efforts to control drug abuse. According to the 2004 National Survey on Drug Use and Health, “adults who had first used substances at a younger age were more likely to be classified with dependence or abuse than adults who initiated use at a later age.”1 This report will look at age of first use among Treatment Episode Data Set (TEDS) admissions for drugs other than alcohol.2 TEDS collects data on the approximately 1.8 million annual admissions to substance abuse treatment facilities, primarily those that receive some public funding. Up to three substances may be reported in TEDS as being used at the time of admission.3 This report classifies admissions according to the earliest age at which use began for any of the drugs reported. For some admissions, it is possible that initiation of drug use may have occurred at an even earlier age if the first drug used was not among the three drugs reported at time of admission.
There are two ways of evaluating age of first use among TEDS admissions: the first is the average or mean age; and the second is to measure the percentage of admissions who started before a given age. Since studies of drug use commonly employ drug use before the age of 13 as an indicator,4 that age will also be used in this report when describing age of first use as a percentage of admissions.
The average age of first use among admissions for drug use showed a slight decrease, from 18.8 in 1993 to 18.6 in 2003. This trend was echoed in the increase in the proportion of admissions for drug use who started before age 13: 12 percent in 1993 compared to 14 percent in 2003.
The percentage of admissions that initiated drug use before age 13 increased between 1993 and 2003 for marijuana and opiate admissions (from 20 to 23 percent for marijuana admissions and from 4 to 5 percent for opiate admissions), and declined for cocaine and stimulant admissions (from 5 to 4 percent for cocaine admissions and from 10 to 9 percent for stimulant admissions).
Among Black admissions, the percentage using drugs before age 13 increased from 8 percent in 1993 to 11 percent in 2003 (Figure 1). The percentage using drugs before age 13 also increased among Hispanic admissions (10 percent in 1993 vs. 13 percent in 2003) and Asian/Pacific Islander admissions (16 percent in 1993 vs. 19 percent in 2003) and American Indian/Alaska Native admissions (21 percent in 1993 vs. 23 percent in 2003). The percentage initiating drug use before age 13 was unchanged among White admissions (15 percent).
Figure 1. Percent of Admissions Initiating Drug Use Before Age 13, by Race/Ethnicity: 1993 and 2003 | |
Source: 2003 SAMHSA Treatment Episode Data Set (TEDS). |
Between 1993 and 2003, the average age of first use was unchanged among admissions younger than 18 (12.8) and decreased among all other age groups (Table 1). The largest decrease, almost 2 years, was among admissions aged 45 or older at the time of admission (26.5 in 1993 vs. 24.6 in 2003). The percentage of admissions starting drug use before age 13 increased for all age groups except 18- to 24-year-olds.
Table 1. Average Age of Initiating Drug Use and Percent of Admissions Initiating Drug Use Before Age 13, by Age at Admission: 1993 and 2003 | |||||||||||||||||||||||||||||||||||||||||||
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Source: 2003 SAMHSA Treatment Episode Data Set (TEDS). |
Table 2. Average Age of Initiating Drug Use and Percent of Admissions Initiating Drug Use Before Age 13, by Number of Prior Treatment Episodes: 1993 and 2003 | |||||||||||||||||||||||||||||||||||||||||||||||||
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Source: 2003 SAMHSA Treatment Episode Data Set (TEDS). |
Figure 2. Percent of Admissions Initiating Drug Use Before Age 13, by Referral Source: 1993 and 2003 | |
Source: 2003 SAMHSA Treatment Episode Data Set (TEDS). |
End Notes
1 Substance Abuse
and Mental Health Services Administration, Office of Applied Studies. (2005).
Results from the 2004 National Survey on Drug Use and Health: National findings
(NSDUH Series H-28, DHHS Publication No. SMA 05-4062). Rockville, MD.
2 Age of first
use is defined differently for alcohol than for drugs. For alcohol, age of
first use signifies age of first intoxication. For drugs, age of first use
identifies the age at which the respective drug was first used.
3 The substances
reported at the time of admission may not include the first drug ever used.
4 Substance Abuse
and Mental Health Services Administration, Office of Applied Studies. (2005).
Treatment Episode Data Set (TEDS): 1993-2003. National admissions to substance
abuse treatment services (DASIS Series S-29, DHHS Publication No. SMA
05-4118). Rockville, MD.
The Drug and Alcohol
Services Information System (DASIS) is an integrated data system
maintained by the Office of Applied Studies, Substance Abuse and Mental
Health Services Administration (SAMHSA). One component of DASIS is the
Treatment Episode Data Set (TEDS). TEDS is a compilation of data on the
demographic characteristics and substance abuse problems of those
admitted for substance abuse treatment. The information comes primarily
from facilities that receive some public funding. Information on
treatment admissions is routinely collected by State administrative
systems and then submitted to SAMHSA in a standard format. TEDS records
represent admissions rather than individuals, as a person may be
admitted to treatment more than once. State admission data are reported
to TEDS by the Single State Agencies (SSAs) for substance abuse
treatment. There are significant differences among State data collection
systems. Sources of State variation include completeness of reporting,
facilities reporting TEDS data, clients included, and treatment
resources available. See the annual TEDS reports for details.
Approximately 1.8 million records are included in TEDS each year. The DASIS Report is prepared by the Office of Applied Studies, SAMHSA; Synectics for Management Decisions, Inc., Arlington, Virginia; and by RTI International in Research Triangle Park, North Carolina (RTI International is a trade name of Research Triangle Institute). Information and data for this issue are based on data reported to TEDS through April 11, 2005.
Access the latest TEDS reports at: |
The DASIS Report is
published periodically by the Office of Applied Studies, Substance Abuse
and Mental Health Services Administration (SAMHSA).
All material appearing in this report is in the public domain and may be
reproduced or copied without permission from
SAMHSA. Additional copies of this report or other reports from the
Office of Applied Studies are available on-line:
http://www.oas.samhsa.gov. Citation of the source is appreciated.
For questions about this report please e-mail:
shortreports@samhsa.hhs.gov
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This page was last updated on December 30, 2008. |