TABLE 1.

Sociodemographic Factors and Risk of SIDS (N = 260 Matched Pairs)

VariablesSIDS CasesControlsOR (95% CI)
N %N %
Maternal age (y)
 ≥3033 (12.7)60 (23.1)1.0 Reference
 25–2952 (20.0)63 (24.2)1.6 (0.9–2.9)
 20–24107 (41.1)75 (28.8)2.8 (1.6–4.8)
 18–1935 (13.5)28 (10.8)2.5 (1.2–5.0)
 ≤1733 (12.7)34 (13.1)1.9 (0.97–3.7)
Marital status
 Married42 (16.2)91 (35.0)1.0 Reference
 Single218 (83.8)169 (65.0)3.5 (2.1–5.7)
Maternal education
 Over high school39 (15.0)114 (43.9)1.0 Reference
 High school graduate84 (32.3)81 (31.1)2.9 (1.7–4.7)
 Below high school137 (52.7)65 (25.0)5.7 (3.4–9.4)
Index of prenatal care (Kessner)
 Adequate100 (38.5)163 (62.7)1.0 Reference
 Intermediate81 (31.1)74 (28.5)1.8 (1.1–2.8)
 Inadequate79 (30.4)23 (8.8)6.5 (3.5–12.0)
Parity
 156 (21.6)88 (33.9)1.0 Reference
 251 (19.6)56 (21.5)1.4 (0.8–2.3)
 350 (19.2)51 (19.6)1.6 (0.9–2.8)
 ≥4103 (39.6)65 (25.0)2.5 (1.6–4.0)
Job prestige score
 High14 (5.4)51 (19.6)1.0 Reference
 Intermediate54 (20.8)78 (30.0)4.3 (1.7–10.5)
 Low192 (73.8)131 (50.4)9.2 (3.8–22.2)
Maternal employment (ever)
 Employed178 (68.5)212 (81.5)1.0 Reference
 Unemployed82 (31.5)48 (18.5)2.2 (1.4–3.5)
Public aid any source of income
 No59 (33.1)124 (47.7)1.0 Reference
 Yes119 (66.9)136 (52.3)2.2 (1.3–3.5)
Infant’s sex
 Female111 (42.7)128 (49.2)1.0 Reference
 Male149 (57.3)132 (50.8)1.3 (0.9–1.8)