| Characteristic | 1991 | 1993 | 1995 | 1997 | 1999 | 2001 | 2003 | 2005 |
|---|---|---|---|---|---|---|---|---|
| Total | 54.1 | 53.0 | 53.1 | 48.4 | 49.9 | 45.6 | 46.7 | 46.8 |
| Gender | ||||||||
| Male | 57.4 | 55.6 | 54.0 | 48.9 | 52.2 | 48.5 | 48.0 | 47.9 |
| Female | 50.8 | 50.2 | 52.1 | 47.7 | 47.7 | 42.9 | 45.3 | 45.7 |
| Race and Hispanic origina | ||||||||
| White, non-Hispanic | 50.0 | 48.4 | 48.9 | 43.6 | 45.1 | 43.2 | 41.8 | 43.0 |
| Black, non-Hispanic | 81.5 | 79.7 | 73.4 | 72.7 | 71.2 | 60.8 | 67.3 | 67.6 |
| Hispanic | 53.1 | 56.0 | 57.6 | 52.2 | 54.1 | 48.4 | 51.4 | 51.0 |
| Otherb | 43.8 | 43.4 | 45.9 | 45.3 | 45.6 | 40.1 | 41.6 | 36.4 |
| Grade | ||||||||
| 9th-Grade | 39.0 | 37.7 | 36.9 | 38.0 | 38.6 | 34.4 | 32.8 | 34.3 |
| 10th-Grade | 48.2 | 46.1 | 48.0 | 42.5 | 46.8 | 40.8 | 44.1 | 42.8 |
| 11th-Grade | 62.4 | 57.5 | 58.6 | 49.7 | 52.5 | 51.9 | 53.2 | 51.4 |
| 12th-Grade | 66.7 | 68.3 | 66.4 | 60.9 | 64.9 | 60.5 | 61.6 | 63.1 |
| a From 1991 to 2003, the 1977 OMB Standards for Data on Race and Ethnicity were used to classify persons into one of the following four racial groups: White, Black, American Indian or Alaskan Native, or Asian or Pacific Islander. In each survey, a single question format (approved by OMB) was used to ask about both race and ethnicity. In 2005, the national Youth Risk Behavior Survey (YRBS) applied OMB's 1997 revision to the 1977 directive and began asking about race and ethnicity in a two-question format (a methodological study [in press] has been conducted to confirm that trend analyses would not be effected by the change in format starting with the 2005 survey). In addition, note that data on race and Hispanic origin are collected separately, but are combined for reporting. Regardless of question format, the data have been combined to create the following standard categories—White, non-Hispanic, Black, non-Hispanic, and Hispanic. Estimates are not shown separately for American Indian or Alaskan Native, Asian, or Native Hawaiian or Other Pacific Islander races due to the small sample size for each of these groups. | ||||||||
| b Students were coded as "Other" if they (1) did not self-report as Hispanic, and (2) selected "American Indian or Alaskan Native," "Asian," and/or "Native Hawaiian or Other Pacific Islander," or selected more than one response to a question on race. | ||||||||
| NOTE: Data are based on the student's response to the question "Have you ever had sexual intercourse?" | ||||||||
| SOURCE: Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Youth Risk Behavior Surveillance System. | ||||||||
