TABLE 2.

Selected Characteristics of Control and Case Children

n (%)*Matched OR (95% CI)P
Case Subjects (N = 184)Control Subjects (N = 893)
Gender
    Male93 (50)462 (52)1.0 (0.7–1.5).88
    Female91 (50)431 (48)Reference
Race/ethnicity
    White, non-Hispanic148 (84)771 (87)Reference
    Black, non-Hispanic4 (2)25 (3)0.7 (0.2–2.7).65
    Hispanic15 (8)39 (4)2.2 (0.9–5.1).07
    Other10 (6)51 (6)1.2 (0.6–2.4).63
    Missing77
Child day care attendance
    Attends ≥4 h/wk62 (36)391 (45)0.6 (0.4–0.9).03
    Does not attend110 (64)487 (56)Reference
    Missing1215
Insurance for enrolled child
    None11 (7)40 (5)2.4 (1.1–4.9).02
    Medicaid or subsidized35 (21)62 (7)4.6 (2.7–7.9)<.001
    Private119 (72)785 (89)Reference
    Missing196
Mother's education
    Less than high school23 (14)51 (6)4.4 (2.3–8.4)<.001
    High school graduate37 (23)155 (17)2.3 (1.4–3.9).002
    Some college or technical school55 (34)253 (29)1.9 (1.2–2.9).006
    College graduate46 (29)427 (48)Reference
    Missing237
Parent's age (≥1)
    ≤24 y41 (25)71 (8)3.9 (2.4–6.1)<.001
    ≥25 y126 (75)811 (92)Reference
    Missing1711
Size of household
    25 (3)8 (1)2.9 (0.9–9.3)
    335 (19)187 (21)Reference
    4 or 593 (52)567 (64)0.8 (0.5–1.3)
    647 (26)129 (14)1.9 (1.1–3.2)<.01
    Missing42
Siblings 6–11 y of age
    None99 (55)573 (65)Reference
    ≥180 (45)314 (35)1.5 (1.04–2.1).03
    Missing56
Siblings 12–17 y of age
    None151 (84)769 (87)Reference
    ≥128 (16)118 (13)1.2 (0.8–1.9).4
    Missing56
Any “other” in household
    None139 (78)812 (92)Reference
    ≥140 (22)75 (8)3.0 (2.0–4.4)<.001
    Missing56
Any “other” 6–17 y of age
    None162 (92)869 (98)Reference
    ≥117 (9)18 (2)5.0 (2.5–10.2)<.001
    Missing56
  • * Percentage of case or control subjects with known data.