Chapter 2's Figure 8 shows the age distribution of respondents to the 1999 National Household Survey on Drug Abuse as a percentage of the U.S. population. It highlights the fact that a disproportionate percentage of younger persons are included in the survey, which covers ages from 12 to 105. A higher proportion of persons aged 35 or younger are surveyed.

Click here to return to Figure 8

Click here to return to Table of Contents

This page was last updated on June 16, 2008.

SAMHSA, an agency in the Department of Health and Human Services, is the Federal Government's lead agency for improving the quality and availability of substance abuse prevention, addiction treatment, and mental health services in the United States.