TABLE 2

Analysis Sample Characteristics, National Longitudinal Study of Adolescent Health, 2007–2008

No PI (Lifetime) (95% CI)MI (<18 y) (95% CI)FI (<18 y) (95% CI)
Weighted %a, n = 10 908Weighted %a,b, n = 269Weighted %a,b, n = 1230
Sex, female, %49.7 (48.2–51.1)54.3 (46.2–62.2)51.0 (47.1–55.0)
Race and/or ethnicity, %
 Non-Hispanic white 68.6 (62.6–74.0)47.2 (36.2–58.5)57.4 (50.1–64.4)
 Non-Hispanic Black13.1 (9.9–17.2)34.3 (25.2–44.8)23.0 (17.1–30.3)
 Hispanic11.3 (8.2–15.3)11.4 (6.7–18.6)14.2 (10.5–19.1)
 Non-Hispanic, other race and/or ethnicity7.0 (5.4–9.1)7.1 (2.9–16.3)5.4 (3.6–7.9)
Age, meanc15.3 (15.0–15.6)15.5 (15.2–15.7)15.5 (15.2–15.7)
Family structure, %
 2-parent household65.5 (63.4–67.5)13.5 (8.8–20.3)27.3 (23.5–31.4)
 1-parent household31.8 (30.0–33.6)63.7 (54.8–71.8)65.7 (61.9–69.3)
 No biological parents in household2.8 (2.2–3.4)22.7 (15.5–32.1)7.0 (5.2–9.4)
Mother’s education, %
 No resident mother3.5 (3.1–4.0)10.4 (6.4–16.4)5.4 (3.9–7.3)
 Less than high school16.2 (13.9–18.7)27.8. (21.1–35.7)25.6 (21.7–29.8)
 High school, trade school, or GED education41.4 (38.7–44.2)42.7 (35.2–50.5)44.5 (39.8–49.3)
 College education or higher38.9 (35.6–42.3)19.1 (12.5–25.7)24.6 (20.6–29.1)
Father’s education, %
 No resident father21.3 (19.4–23.3)49.9 (41.3–58.4)48.7 (44.7–52.7)
 Less than high school13.5 (11.5–15.7)14.7 (10.1–21.0)18.5 (15.2–22.3)
 High school, trade school, or GED education30.5 (28.0–33.1)23.2 (17.0–30.8)23.8 (20.2–27.9)
 College education or higher34.7 (31.4–38.2)12.2 (7.0–20.2)9.0 (7.0–11.3)
Received public assistance, %7.4 (6.1–8.9)28.3 (21.2–36.6)25.3 (21.7–29.4)
Geography, %
 Suburban40.7 (35.4–46.1)25.4 (18.3–34.1)28.8 (23.6–34.6)
 Urban27.5 (23.1–32.4)47.9 (38.2–57.8)38.8 (31.9–46.1)
 Rural28.8 (24.1–33.9)21.3 (14.8–29.7)28.7 (22.2–36.1)
 Other3.1 (2.3–4.1)5.4 (2.6–10.9)3.8 (2.6–5.5)
  • CI, confidence interval; GED, General Equivalency Development.

  • a Reflects the representative proportion in the target US population. Percentages may not total 100% because of rounding.

  • b Columns may not sum to the total number of participants (N = 13 084) because 0.7% (n = 95) of individuals experienced both MI and FI before the age of 18 and are reflected in both categories; 5.9% (n = 772) of individuals had MI or FI after the age of 18.

  • c Age at wave 1 mean age (2007–2008).