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Table 2 Univariate logistic regression of associated factors for Asthma, NSCH (2011–2012)

From: Is preterm birth associated with asthma among children from birth to 17 years old? -A study based on 2011-2012 US National Survey of Children’s Health

Variable Univariate
OR 95% CI
Preterm birth 1.67 1.49 1.86
Low Birth Weight 1.46 1.29 1.65
Gender of Child (Male) 1.26 1.16 1.37
Race/Ethnicity of Child
 Hispanic Ref   
 Non-Hispanic white 0.99 0.88 1.12
 Non-Hispanic black 1.94 1.67 2.24
 Non-Hispanic other 1.15 0.97 1.35
Child’s age at interview (years)
  < =3 Ref   
 4~6 2.36 2.01 2.78
 7~12 2.89 2.51 3.32
 13~17 3.51 3.04 4.05
Family Structure
 Currently married Ref   
 Cohabiting 1.08 0.92 1.26
 Living apart 1.47 1.31 1.66
 Never married 1.71 1.49 1.95
 No parents in household 2.20 1.77 2.72
Difficulty paying for bills
 Never Ref   
 Not very often 1.25 1.13 1.38
 Somewhat often 1.45 1.30 1.62
 Very often 1.95 1.67 2.27
Parents’ Education
 More than high school Ref   
 High school graduate 1.10 1.01 1.21
 Less than high school 1.13 1.00 1.28
Use of cigarettes, cigars, or pipe tobacco in the household 1.39 1.27 1.52
Litter or garbage on the street or sidewalk 1.20 1.08 1.34
  1. Ref Reference
  2. *p < 0.05