Approximately 20 percent of adolescents and younger adults were diagnostic orphans (i.e., respondents with 1 or 2 dependence criteria but no DSM-IV AUD diagnosis) with the proportions slightly lower among adults aged 26 years and older. Figure 1 illustrates the distribution of symptom criteria graphically. The prevalence of symptom criteria was notably higher for tolerance, time spent, and hazardous use within each age group. Among female respondents, the prevalence of symptom criteria was similar for ages 12–17 and 18–25 in contrast to that for male respondents.
