Table 1.

Distributions of Covariates Among African-American and White Adolescents—United States, 1992*

Race
African-American (n = 962)White (n = 4607)
Variable
%*(95% Confidence Interval)%(95% Confidence Interval)
Gender
 Female50.0(46.5, 53.6)49.7(48.2, 51.3)
 Male50.0(46.4, 53.5)50.3(48.7, 51.8)
Age
 12–13 years34.5(30.8, 38.2)34.2(32.7, 35.8)
 14–15 years35.3(31.8, 38.8)33.5(31.9, 35.0)
 16–17 years30.2(26.9, 33.6)32.3(30.7, 33.9)
Parental education
 Less than 12 years20.6(17.6, 23.6)11.9(10.3, 13.5)
 12 years42.6(38.5, 46.8)34.5(32.6, 36.4)
 13–15 years23.8(20.2, 27.3)24.2(22.8, 25.7)
 16 or more years13.0(10.3, 15.7)29.3(27.5, 31.1)
Seat belt use
 Always26.2(22.6, 29.7)34.4(32.4, 36.4)
 Most of the time/sometimes52.1(48.6, 55.6)50.0(48.3, 51.8)
 Rarely/never21.7(18.0, 25.5)15.6(14.1, 17.1)
Physical activity in past 7 days
 3 or more days58.3(54.8, 61.7)64.8(63.1, 66.5)
 1–2 days18.5(15.8, 21.2)19.2(17.9, 20.5)
 0 days23.3(20.3, 26.3)16.0(14.6, 17.4)
Weapon carrying in past 30 days
 0 days86.8(84.3, 89.4)84.9(83.6, 86.1)
 1–5 days9.3 (7.2, 11.3)9.0(8.0, 9.9)
 6 or more days3.9 (2.2, 5.6) 6.2(5.2, 7.1)
Physical fights in past 12 months
 0 times43.4(39.1, 47.6)57.5(55.8, 59.2)
 1–3 times43.0(39.3, 46.6)30.7(29.2, 32.2)
 4 or more times13.7(10.8, 16.6)11.8(10.7, 12.9)
Binge drinking in past 30 days
 Not during life60.1(56.0, 64.1)48.6(46.8, 50.4)
 0 days33.9(30.2, 37.7)33.6(32.0, 35.2)
 1–2 days4.3(2.6, 5.9)10.9 (9.9, 11.9)
 3 or more days1.7(0.9, 2.6)6.9(6.0, 7.7)
Marijuana use in past 30 days
 Not during life88.8(86.2, 91.4)83.6(82.3, 84.8)
 0 times7.3(5.2, 9.4) 8.7(7.8, 9.7)
 1 or more times3.9(2.4, 5.4) 7.7(6.8, 8.6)
Other illegal drug use in lifetime
 Never97.7(96.5, 98.9)90.6(89.7, 91.4)
 Ever2.3 (1.1, 3.5)  9.4 (8.6, 10.3)
  • * Weighted percentages, adjusted for sampling design and nonresponse.