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. 2004 Jun 17;4:10. doi: 10.1186/1471-2393-4-10

Table 5.

Adjusted odds ratios for risk of low birthweight using full model

Mother White Mother Non-White
OR* p-value OR* p-value

Maternal Education † <0.0001 0.13
<12 1.49 0.85
12 1.17 0.95
13–15 1.11 1.08
> = 16 referent referent
Paternal Education † 0.0001 .04
<12 1.30 1.40
12 1.20 1.25
13–15 1.10 1.11
> = 16 referent referent
Maternal Race n/a 0.08
White n/a n/a
Hispanic n/a referent
Black n/a 1.43
Asian or Pacific Islander n/a 1.28
Native American or Other n/a 1.11
Paternal Race 0.90 0.001
White Referent 0.73
Hispanic 0.94 Referent
Black 0.99 1.21
Asian or Pacific Islander 1.00 0.87
Native American or Other 0.89 1.34
Maternal Age (years) <.0001 0.004
19–24 referent referent
25–29 1.17 1.17
30–34 1.25 1.34
> = 35 1.61 1.53
Paternal Age (years) 0.4 0.048
19–24 referent referent
25–29 1.09 0.75
30–34 1.09 0.67
> = 35 1.09 0.82
Marital Status 0.05 0.035
yes 1.09 1.20
no referent referent
Insurance <.0001 0.42
Commercial / HMO referent referent
Medicaid 1.25 0.93
Uninsured 0.94 1.09
Maternal Smoking <.0001 <.0001
yes 2.10 1.74
no referent referent
Maternal Alcohol Use 0.13 0.01
yes 1.17 1.03
no referent referent
Parity (number of prior births) <.0001 <.0001
0 referent referent
1–3 0.54 0.65
> = 4 0.57 0.71

White denotes infants whose mother was white. Non-white denotes infants whose mother was Black, Asian, Hispanic, Native American, or Other. For categorical variables, p-values correspond to the significance of the omnibus Wald test for the entire variable, not a specific category. Model also adjusts for immigration status, initiation of prenatal care after the 1st trimester, and maternal diabetes. * OR: adjusted odds ratio. n/a: not applicable. †Years of education completed.