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North Carolina, High School Youth Risk Behavior Survey, 2011
(among students who had ridden a bicycle during the 12 months before the survey)86.8 (80.5–91.3) 1,159 85.9 (78.4–91.0) 551 87.4 (80.7–92.1) 604 (when riding in a car driven by someone else)8.1 (6.6–9.7) 2,263 5.0 (3.7–6.8) 1,206 10.9 (9.0–13.1) 1,049 (in a car or other vehicle during the 30 days before the survey)21.0 (18.9–23.2) 2,271 20.1 (17.8–22.6) 1,208 21.8 (19.0–25.0) 1,055 (a car or other vehicle during the 30 days before the survey)6.3 (5.3–7.5) 2,210 4.0 (3.1–5.1) 1,189 8.6 (6.8–10.7) 1,014 (for example, a gun, knife, or club during the 30 days before the survey)6.1 (4.9–7.6) 2,232 2.6 (1.7–4.1) 1,196 9.5 (7.5–11.9) 1,031 (during the 30 days before the survey)6.8 (5.4–8.6) 2,255 6.8 (5.3–8.6) 1,201 6.8 (5.0–9.1) 1,045 (for example, a gun, knife, or club during the 12 months before the survey)9.1 (7.3–11.3) 2,272 6.7 (4.9–9.2) 1,206 11.1 (8.5–14.3) 1,056 (during the 12 months before the survey)10.6 (8.7–12.9) 2,232 6.4 (4.7–8.7) 1,191 14.6 (11.7–17.9) 1,032 (during the 12 months before the survey)20.5 (17.8–23.4) 2,241 22.6 (19.1–26.4) 1,197 18.2 (15.4–21.3) 1,035 (almost every day for 2 or more weeks in a row so that they stopped doing some usual activities during the 12 months before the survey)28.3 (25.6–31.2) 2,229 32.6 (29.4–36.0) 1,193 24.0 (20.7–27.7) 1,030 (during the 12 months before the survey)14.3 (12.5–16.4) 2,239 15.1 (12.5–18.1) 1,195 13.5 (11.0–16.5) 1,037 (during the 12 months before the survey)13.5 (12.1–15.0) 2,234 13.2 (11.2–15.6) 1,191 13.6 (11.7–15.9) 1,037 (during the 12 months before the survey)— — — (during the 12 months before the survey)5.0 (3.8–6.5) 1,907 3.8 (2.8–5.3) 1,038 6.1 (4.3–8.7) 864 (for example, a gun, knife, or club during the 30 days before the survey)20.8 (18.4–23.5) 2,235 9.6 (7.5–12.1) 1,200 32.0 (27.7–36.6) 1,029 (during the 30 days before the survey)— — — (during the 12 months before the survey)27.6 (24.9–30.5) 2,217 19.4 (15.9–23.5) 1,187 35.6 (31.8–39.6) 1,021 (injuries had to be treated by a doctor or nurse, during the 12 months before the survey)3.7 (2.6–5.2) 2,232 2.6 (1.7–4.0) 1,192 4.7 (3.1–7.2) 1,032 (during the 12 months before the survey)14.1 (11.5–17.2) 2,245 13.3 (9.7–18.1) 1,197 14.7 (11.4–18.7) 1,042 (when they did not want to)9.5 (7.6–11.7) 2,238 12.3 (9.7–15.6) 1,193 6.6 (5.1–8.5) 1,038 (including through e-mail, chat rooms, instant messaging, Web sites, or texting during the 12 months before the survey)15.7 (14.0–17.5) 2,240 20.7 (18.9–22.6) 1,197 10.6 (8.3–13.5) 1,036 (even one or two puffs)— — — 12.4 (10.3–14.8) 2,252 9.3 (7.5–11.4) 1,198 15.3 (11.9–19.5) 1,047 (during the 30 days before the survey)17.7 (14.9–20.9) 2,217 14.7 (11.3–19.0) 1,188 20.5 (17.2–24.1) 1,021 (during the 30 days before the survey)6.8 (5.1–8.8) 2,217 4.3 (2.5–7.3) 1,188 9.1 (7.4–11.1) 1,021 (among students who currently smoked cigarettes, on the days they smoked during the 30 days before the survey)— — — (during the 30 days before the survey)— — — — — — (among students who currently smoked cigarettes, during the 12 months before the survey)50.0 (44.0–56.0) 400 42.3 (32.5–52.8) 181 55.4 (49.2–61.5) 217 (among the students who were aged <18 years and who currently smoked cigarettes, during the 30 days before the survey)— — — (during the 30 days before the survey)11.0 (8.7–13.8) 2,270 2.6 (1.8–3.7) 1,204 19.0 (15.1–23.6) 1,056 (during the 30 days before the survey)— — — (during the 30 days before the survey)— — — (during the 30 days before the survey)— — — (during their life)— — — (other than a few sips)18.2 (16.1–20.5) 2,250 13.8 (10.7–17.6) 1,196 22.3 (20.1–24.8) 1,044 (during the 30 days before the survey)34.3 (31.5–37.3) 2,062 33.2 (29.5–37.0) 1,115 35.5 (31.2–40.1) 941 (during the 30 days before the survey)17.6 (15.5–20.1) 2,207 13.6 (11.3–16.2) 1,187 21.7 (18.6–25.2) 1,012 (among students who currently drank alcohol during the 30 days before the survey)34.2 (30.1–38.5) 591 41.1 (34.9–47.7) 314 27.8 (22.6–33.6) 277 (during the 30 days before the survey)5.5 (4.1–7.4) 2,201 3.7 (2.3–6.0) 1,184 7.1 (5.4–9.4) 1,010 (during their life)42.9 (38.6–47.4) 2,181 37.5 (32.5–42.8) 1,169 48.3 (43.6–53.0) 1,007 9.4 (7.2–12.1) 2,198 6.1 (4.3–8.8) 1,177 12.3 (9.6–15.7) 1,015 (during the 30 days before the survey)24.2 (21.7–26.9) 2,194 18.0 (15.0–21.4) 1,179 30.2 (27.2–33.4) 1,010 (during the 30 days before the survey)5.2 (3.7–7.5) 1,880 2.4 (1.4–4.2) 1,029 8.1 (5.7–11.4) 847 (for example, powder, crack, or freebase, during their life)7.1 (5.4–9.3) 2,248 4.2 (3.1–5.7) 1,194 9.9 (7.0–13.7) 1,047 (for example, powder, crack, or freebase, during the 30 days before the survey)— — — (during their life)11.2 (9.3–13.4) 2,265 9.7 (7.2–12.8) 1,203 12.4 (9.9–15.4) 1,054 (also called "smack", "junk", or "China white", during their life)— — — (also called "speed", "crystal", "crank", or "ice", during their life)4.8 (3.3–6.8) 2,261 2.4 (1.5–3.7) 1,200 6.9 (4.5–10.5) 1,052 (also called "MDMA", during their life)— — — (during their life)4.2 (2.9–6.1) 1,922 1.6 (1.0–2.6) 1,040 6.7 (4.6–9.7) 876 (such as Oxycontin, Percocet, Vicodin, codeine, Adderall, Ritalin, or Xanax, during their life)20.4 (17.3–23.9) 2,263 16.5 (13.8–19.7) 1,202 24.1 (20.0–28.6) 1,053 (during their life)— — — (during the 12 months before the survey)29.8 (26.1–33.8) 2,239 24.0 (20.8–27.5) 1,197 35.5 (30.7–40.6) 1,036 49.3 (44.6–53.9) 2,035 47.1 (42.0–52.3) 1,103 51.4 (46.8–56.0) 928 8.6 (6.5–11.4) 2,046 5.3 (3.4–8.4) 1,107 12.0 (9.3–15.3) 934 (during their life)16.8 (13.8–20.3) 2,034 14.6 (11.4–18.6) 1,107 18.9 (14.9–23.7) 922 (during the 3 months before the survey)34.9 (31.4–38.6) 2,044 36.7 (32.1–41.6) 1,109 32.9 (29.9–36.1) 930 (among students who were currently sexually active)25.3 (22.2–28.8) 694 18.6 (14.9–23.0) 388 33.1 (28.2–38.3) 304 (among students who were currently sexually active)46.3 (42.1–50.6) 688 50.6 (45.3–55.8) 383 41.6 (35.9–47.5) 302 (to prevent pregnancy, among students who were currently sexually active)— — — — — — (to prevent pregnancy, among students who were currently sexually active)— — — (to prevent pregnancy, among students who were currently sexually active)— — — (to prevent pregnancy, among students who were currently sexually active)— — — (among students who were currently sexually active)— — — (during the 7 days before the survey)25.3 (23.0–27.8) 2,235 27.5 (24.5–30.7) 1,192 23.2 (20.7–25.9) 1,035 (during the 7 days before the survey)16.4 (13.6–19.7) 2,242 15.3 (12.0–19.3) 1,192 17.4 (14.2–21.2) 1,041 (during the 7 days before the survey)40.9 (36.4–45.6) 2,222 37.6 (33.3–42.1) 1,184 44.2 (38.3–50.2) 1,029 (excluding French fries, fried potatoes, or potato chips, during the 7 days before the survey)36.5 (32.4–40.8) 2,229 37.6 (33.0–42.4) 1,186 35.5 (31.0–40.3) 1,034 (during the 7 days before the survey)59.4 (53.8–64.8) 2,234 62.3 (55.7–68.5) 1,189 56.7 (51.5–61.8) 1,036 (excluding green salad, potatoes, or carrots, during the 7 days before the survey)17.8 (15.0–21.0) 2,228 16.0 (13.0–19.7) 1,188 19.5 (16.2–23.4) 1,031 (not counting diet soda or diet pop, during the 7 days before the survey)78.9 (75.7–81.8) 1,898 76.6 (71.3–81.2) 1,031 81.3 (78.4–83.9) 862 (not counting diet soda or diet pop, during the 7 days before the survey)30.4 (27.1–34.0) 1,898 26.3 (21.8–31.3) 1,031 34.5 (30.0–39.3) 862 (not counting diet soda or diet pop, during the 7 days before the survey)22.3 (18.7–26.4) 1,898 19.1 (14.8–24.4) 1,031 25.5 (21.1–30.5) 862 (not counting diet soda or diet pop, during the 7 days before the survey)14.0 (11.2–17.4) 1,898 10.9 (7.8–15.2) 1,031 17.1 (13.5–21.3) 862 (during the 7 days before the survey)7.7 (6.4–9.3) 2,232 7.4 (5.7–9.5) 1,190 8.0 (6.2–10.2) 1,034 (during the 7 days before the survey)44.5 (41.1–48.0) 2,232 45.9 (41.2–50.6) 1,190 43.2 (39.6–46.9) 1,034 (during the 7 days before the survey)69.9 (67.1–72.6) 2,232 70.9 (66.1–75.2) 1,190 69.0 (65.2–72.6) 1,034 (during the 7 days before the survey)80.2 (78.4–81.9) 2,232 81.5 (77.7–84.8) 1,190 79.0 (76.5–81.2) 1,034 (green salad, potatoes [excluding French fries, fried potatoes, or potato chips], carrots, or other vegetables, during the 7 days before the survey)7.9 (6.2–10.1) 2,204 7.1 (5.6–8.9) 1,178 8.9 (6.6–11.8) 1,017 (green salad, potatoes [excluding French fries, fried potatoes, or potato chips], carrots, or other vegetables, during the 7 days before the survey)39.6 (35.9–43.4) 2,204 40.6 (36.7–44.6) 1,178 38.8 (33.9–43.9) 1,017 (green salad, potatoes [excluding French fries, fried potatoes, or potato chips], carrots, or other vegetables, during the 7 days before the survey)74.3 (71.2–77.1) 2,204 77.3 (73.6–80.5) 1,178 71.4 (67.2–75.2) 1,017 (green salad, potatoes [excluding French fries, fried potatoes, or potato chips], carrots, or other vegetables, during the 7 days before the survey)86.7 (84.6–88.6) 2,204 89.5 (87.2–91.4) 1,178 84.0 (80.6–86.9) 1,017 (students who were >= 85th percentile but < 95th percentile for body mass index, based on sex- and age-specific reference data from the 2000 CDC growth charts)15.9 (14.0–18.0) 2,194 16.4 (13.7–19.5) 1,166 15.5 (13.2–18.1) 1,028 12.9 (10.1–16.4) 2,194 10.9 (7.9–14.8) 1,166 14.8 (11.6–18.6) 1,028 27.1 (24.8–29.5) 2,248 33.4 (30.2–36.7) 1,199 20.9 (18.1–24.1) 1,041 (during the 30 days before the survey)— — — (without a doctor's advice, during the 30 days before the survey)6.1 (4.9–7.7) 2,220 5.8 (4.7–7.2) 1,194 6.4 (4.5–9.1) 1,021 (during the 30 days before the survey)5.5 (4.2–7.1) 2,208 5.9 (4.6–7.5) 1,183 5.0 (3.3–7.6) 1,017 (doing any kind of physical activity that increased their heart rate and made them breathe hard some of the time during the 7 days before the survey)52.4 (49.0–55.7) 2,223 60.9 (56.8–64.9) 1,187 44.0 (39.9–48.1) 1,027 (when they were in school)— — — (when they were in school)— — — (run by their school or community groups during the 12 months before the survey)— — — (on an average school day)34.7 (31.3–38.3) 2,215 33.8 (29.7–38.3) 1,185 35.7 (30.9–40.7) 1,022 (played video or computer games or used a computer for something that was not school work on an average school day)27.8 (24.2–31.8) 2,226 24.2 (20.4–28.5) 1,187 31.5 (27.0–36.3) 1,031 (doing any kind of physical activity that increased their heart rate and made them breathe hard some of the time during the 7 days before the survey)74.0 (71.6–76.4) 2,223 81.6 (79.1–83.9) 1,187 66.4 (62.7–70.0) 1,027 (doing any kind of physical activity that increased their heart rate and made them breathe hard some of the time during the 7 days before the survey)15.5 (13.0–18.3) 2,223 18.4 (14.5–23.1) 1,187 12.5 (10.2–15.3) 1,027 22.8 (21.1–24.5) 2,190 22.9 (20.3–25.7) 1,172 22.7 (19.6–26.2) 1,013 11.6 (10.2–13.1) 2,186 13.4 (11.2–16.0) 1,169 9.9 (7.8–12.5) 1,012