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Table 3 Characteristics of the mothers and fathers of children enrolled in the allergic and non-allergic families cohorts (as reported by the mother at the prenatal interview)

From: The Urban Environment and Childhood Asthma (URECA) birth cohort study: design, methods, and study population

  Allergic Families Non-allergic Families
Characteristic n % n %
  557 100.0 49 100.0
Mother's age in years at child's birth     
   13–17 41 7.4 3 6.1
   18–19 85 15.3 10 20.4
   20–24 204 36.6 13 26.5
   25–29 119 21.4 14 28.6
   30–34 62 11.1 4 8.2
   35–39 40 7.2 5 10.2
   40–42 6 1.1 0 0.0
Race or ethnicity of mother*     
   Hispanic of any race 107 19.4 9 18.4
   Black alone 390 70.9 39 79.6
   White alone 22 4.0 0 0.0
   More than one race 20 3.6 1 2.0
   All others 11 2.0 0 0.0
   Missing 7 -- 0 --
Race or ethnicity of father     
   Hispanic of any race 99 18.0 10 20.4
   Black alone 407 74.1 38 77.6
   White alone 14 2.6 0 0.0
   More than one race 20 3.6 0 0.0
   All others 9 1.6 1 2.0
   Missing 8 -- 0 --
Mother's education     
   Less than high school 231 42.0 14 28.6
   High school 183 33.3 23 46.9
   More than high school 136 24.7 12 24.5
   Missing 7 -- 0 --
Mother's marital status at prenatal visit     
   Married 72 13.1 8 16.3
   Not married 478 86.9 41 83.7
   Missing 7 -- 0 --
Mother smoked during pregnancy 97 17.6 6 12.2
Adult in the family with a regular job 366 66.7 38 77.6
Household annual income < $15,000 353 68.4 29 67.4
Number of previous live births     
   0 220 39.5 17 34.7
   1 147 26.4 19 38.8
   2 96 17.2 5 10.2
   ≥ 3 94 16.9 8 16.3
Number of children in household < 5 years old     
   0 277 50.4 23 46.9
   1 180 32.7 20 40.8
   2 60 10.9 5 10.2
   ≥ 3 33 6.0 1 2.0
   Missing 7 -- 0 --
Number of years at current address     
   < 1 185 33.6 20 40.8
   1–2 142 25.8 15 30.6
   3–4 72 13.1 6 12.2
   5–9 72 13.1 0 0.0
   ≥ 10 79 14.4 8 16.3
   Missing 7 -- 0 --
  1. * Determined by the open-ended question, "How would you describe your race, nationality, or ethnic background?"
  2. Determined by the open-ended question, "How would you describe the race, nationality, or ethnic background of the father of this baby?"