TABLE 1

Prevalence, CIs, and Test Statistics for VoBs and Students With Selected Risk Factors (N = 15 624)

Demographic GroupsVoBaInvolved in Fights at SchoolaFelt Unsafe, Skipped SchoolaThreatened or Injured at Schoola
Overall prevalence20.2% (18.8–21.6)7.8% (6.7–8.9)5.6% (4.8–6.5)6.0% (5.2–6.8)
SexP < .001P < .001P = .02P < .001
 Boys15.8% (14.5–17.2)10.3% (8.8–11.9)5.0% (4.2–5.9)7.0% (6.1–8.1)
 Girls24.8% (22.8–26.9)5.0% (4.1–5.9)6.0% (5.1–7.1)4.6% (3.8–5.5)
GradeP < .001P < .001P = .3P = .02
 Ninth23.4% (20.6–26.3)11.6% (10.1–13.4)6.4% (5.1–7.8)7.2% (6.2–8.3)
 10th20.8% (18.3–23.4)7.3% (5.9–9.0)5.4% (4.1–6.9)6.2% (5.1–7.4)
 11th20.3% (18.6–22.1)6.5% (5.0–8.3)4.6% (3.6–5.8)5.5% (4.2–7.0)
 12th15.9% (14.0–17.8)4.5% (3.5–5.6)5.7% (4.0–7.7)4.4% (3.2–6.0)
RaceP < .001P < .001P < .001P = .03
 White23.5% (21.7–25.3)5.6% (5.0–6.4)4.2% (3.2–5.3)4.9% (3.9–6.0)
 Hispanic or Latino16.5% (14.1–19.1)8.9% (7.3–10.8)7.6% (6.3–9.0)6.6% (5.3–8.0)
 African American13.2% (10.6–16.2)12.6% (9.0–16.9)6.8% (5.4–8.5)7.9% (5.8–10.5)
 Other race20.7% (17.1–24.7)9.1% (6.8–11.8)6.5% (5.0–8.3)7.1% (4.7–10.2)
  • Some of the top-level results presented in this table were originally presented in the CDC’s Morbidity and Mortality Weekly Report.21

  • a P values calculated by using Rao-Scott χ2 test.