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Table 3 Characteristics of High School Students Who Had Sexual Intercourse by State, State YRBS 2005–2011

From: HIV testing among United States high school students at the state and national level, Youth Risk Behavior Survey 2005–2011

Characteristic MA 2005–2011 (n = 4884) % (95% CI) CT 2007–2011 (n = 2342) % (95% CI) NJ 2005,07,11 (n = 1972) % (95% CI) AR 2009–2011 (n = 1282) % (95% CI) NC 2009–2011 (n = 3434) % (95% CI) ND 2009–2011 (n = 1445) % (95% CI) SC 2009 (n = 529) % (95% CI)
Sex of the subject        
  Male 51.7 (49.9–53.5) 51.3 (48.8–53.9) 51.7 (48.7–54.8) 49.9 (45.7–54.0) 51.2 (48.9–53.5) 48.4 (45.1–51.7) 51.0 (46.1–56.0)
  Female 48.3 (46.5–50.1) 48.7 (46.1–51.2) 48.3 (45.2–51.3) 50.1 (46.0–50.3) 48.8 (46.5–51.1) 51.6 (48.3–54.9) 49.0 (44.0–53.9)
Grade of the subject        
  9th grade 17.8 (15.4–20.4) 15.2 (11.6–19.6) 14.7 (11.7–18.3) 19.8 (13.0–29.1) 20.7 (16.5–25.6) 14.4 (10.8–19.0) 24.3 (16.1–35.0)
  10th grade 22.3 (19.6–25.2) 19.7 (16.8–23.0) 20.7 (16.7–25.3) 25.3 (20.4–30.9) 23.8 (20.1–27.9) 22.5 (17.7–28.2) 23.7 (15.0–35.2)
  11th grade 28.0 (24.8–31.5) 28.2 (23.5–33.5) 28.1 (23.8–32.8) 26.7 (21.5–32.6) 27.9 (22.4–34.1) 28.2 (22.4–34.8) 23.9 (17.2–32.2)
  12th grade 31.9 (28.1–36.0) 36.9 (33.1–40.8) 36.5 (30.9–42.6) 28.2 (23.0–34.0) 27.7 (22.7–33.2) 34.8 (28.8–41.4) 28.1 (20.8–36.7)
Race and ethnicity        
  White 69.1 (64.1–73.6) 62.3 (55.6–68.5) 54.8 (45.8–63.4) 65.0 (56.0–73.1) 51.0 (43.8–58.1) 80.0 (73.6–85.2) 49.0 (38.4–59.7)
  Black or African American 10.4 (8.0–13.4) 16.3 (13.1–20.0) 19.6 (13.5–27.7) 25.8 (18.0–35.5) 36.1 (29.3–43.5) 0.8 (0.5–1.2) 44.4 (33.8–55.5)
  Hispanic 15.1 (12.6–18.0) 18.2 (14.4–22.7) 21.6 (17.2–26.8) 6.6 (4.9–8.9) 6.6 (5.5–8.0) 2.1 (1.6–2.9) 3.1 (2.4–4.1)
  Other 5.5 (4.5–6.6) 3.2 (2.7–3.9) 4 (3.26–4.9) 2.5 (2.0–3.3) 6.2 (4.4–8.8) 17.0 (12.0–23.6) 3.4 (2.4–4.8)
Ever been tested for HIV        
  Yes 21.6 (19.4–24.0)a 22.1 (19.3–25.1) 18.9 (16.1–22.1)a 26.4 (23.5–29.5) 23.0 (20.8–25.3) 23.6 (21.4–26.0) 19.6 (15.7–24.1)
  No, not sure 78.4 (76.0–80.6)a 77.9 (74.9–80.7) 85.8 (77.9–83.9)a 73.6 (70.5–76.5) 77.0 (74.7–79.2) 76.4 (74.0–78.6) 80.4 (75.8–84.3)
Use of condom at last sexual intercourse        
  No 36.0 (34.1–38.0) 35.0 (32.4–37.6) 30.1 (27.3–33.1) 39.8 (35.9–43.8) 38.8 (36.6–41.0) 38.5 (35.7–41.4) 36.5 (30.5–42.9)
  Yes 64.0 (62.0–65.9) 65.0 (62.4–67.6) 69.9 (66.9–72.7) 60.2 (56.2–64.1) 61.2 (59.0–63.4) 61.5 (58.6–64.3) 63.5 (57.1–69.5)
4 or more sexual partners in life        
  Yes 27.7 (25.56–30.0) 26.6 (24.6–28.8) 28.4 (25.1–31.9) 36.0 (32.7–39.5) 32.6 (29.9–35.5) 28.0 (25.3–30.9) 36.6 (32.2–41.2)
  No 72.3 (70.0–74.4) 73.4 (71.2–75.4) 71.6 (68.1–74.9) 64.0 (60.5–67.3) 67.4 (64.5–70.1) 72.0 (69.1–74.7) 63.4 (58.8–67.8)
First sexual intercourse before 13        
  Yes 11.4 (10.3–12.5) 12.0 (10.0–14.3) 9.7 (8.2–11.5) 17.7 (14.0–22.1) 15.4 (13.6–17.3) 7.8 (6.4–9.6) 17.3 (13.9–21.2)
  No 88.6 (87.5–89.7) 88.0 (85.7–90.0) 90.3 (88.5–91.8) 82.3 (77.9–86.0) 84.6 (82.7–86.4) 92.2 (90.4–93.6) 82.7 (78.8–86.1)
Ever forced to have sexual intercourse        
  Yes 16.6 (15.5–17.8) 13.4 (12.4–14.5) 13.7 (11.8–15.8) 16.3 (13.4–19.7) 14.1 (12.3–16.1) 11.8 (9.9–13.9) 14.3 (11.1–18.2)
  No 83.4 (82.2–84.5) 86.6 (85.5–87.6) 86.3 (84.2–88.2) 83.7 (80.3–86.6) 85.9 (83.9–87.7) 88.2 (86.1–90.1) 85.7 (81.8–88.9)
Lifetime illegal injection drug use        
  Yes 3.0 (2.4–3.7) 4.2 (2.8–6.3) 2.4 (1.9–3.0) 3.4 (2.29–4.9) 2.1 (1.4–3.4) 3.2 (2.2–4.5) 2.1 (1.2–3.7)
  No 97.0 (96.3–97.6) 95.8 (93.7–97.2) 97.6 (97.0–98.1) 96.6 (95.–97.7) 97.9 (96.6–98.6) 96.8 (95.5–97.8) 97.9 (96.3–98.8)
  1. aHIV testing estimates for the period 2007–2011 in Massachusetts and 2009–2011 in New Jersey. Abbreviations: HIV human immunodeficiency virus, MA Massachusetts, CT Connecticut, NJ New Jersey, AR Arkansas, NC North Carolina, ND North Dakota, SC South Carolina.