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Table A. |
Nationally representative sample and universe surveys used in this report |
| Survey | Sample | Year of survey | Reference time period | Indicators |
|---|---|---|---|---|
| National Crime Victimization Survey (NCVS) | Individuals ages 12 or older living in households and group quarters | 1992–2008 Annually | Incidents occurring during the calendar year1 | 2 |
| The School-Associated Violent Deaths Surveillance Study (SAVD) | Universe | 1992 through 2009 continuous | July 1 through June 30 | 1 |
| School Crime Supplement (SCS) to the National Crime Victimization Survey | Students ages 12–18 enrolled in public and private schools during the school year2 | 1995, 1999, and 2001–2007 biennially | Incidents during the school year2 Not specified | 3, 8, 10, 11, 17, and 18 21 |
| School Survey on Crime and Safety (SSOCS) | Public primary, middle, and high schools3 | 1999–2000, 2003–04, 2005–06, and 2007–08 | 1999–2000, 2003–04, 2005–06, and 2007–08 school years | 6, 7, 19, and 20 |
| Schools and Staffing Survey (SASS) | Public and private school K–12 teachers | 1993–94, 1999–2000, 2003–04, and 2007–08 | Incidents during the previous 12 months | 5, 12 |
| Supplementary Homicide Reports (SHR) | Universe | 1992 2008 continuous | July 1 through June 30 | 1 |
| Web-Based Injury Statistics Query and Reporting System Fatal | Universe | 1992 through 2009 continuous | Calendar year | 1 |
| Youth Risk Behavior Surveillance System (YRBSS) | Students enrolled grades 9–12 in public and private schools at the time of the survey | 1993–2009 biennially | Incidents during previous 12 months Incidents during the previous 30 days | 4, 9, and 13 14, 15, and 16 |
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1 Respondents in the NCVS are interviewed every 6 months and asked about incidents that occurred in the past 6 months. 2 In 2007, the reference period was the school year. In all other survey years, the reference period was the previous 6 months. Cognitive testing showed that estimates from 2007 are comparable to previous years. For more information, please see appendix A. 3 Either school principals or the person most knowledgeable about discipline issues at school completed the SSOCS questionnaire. |
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