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. 2012 Sep 11;7(9):e43931. doi: 10.1371/journal.pone.0043931

Table 2. Risk factor effects on birth weight in grams.

Blacks (N = 173) Hispanics (N = 138) Whites (N = 234)
Trait Model A1 Model B2 Model A Model B Model A Model B
Gestation age/day +26.0*** +26.2*** +25.9*** +26.8*** +26.8*** +26.6***
Female Child −102.9* −88.3 −122.7* −110.9 −107.1* −112.4**
BMI/(kg/m2) +10.4** +1.3 +4.1
Multiparous +76.7 +169.7** +98.7*
Smoked during pregnancy −130.5** −15.7 −200.5***
1

Model A: Birth weight = Gestation Age + Child Sex.

2

Model B: Birth weight = Gestation Age + Child Sex + Pre-pregnancy BMI + Parity + Smoking.

*

Prob≤0.10.

**

Prob≤0.05.

***

Prob≤0.01.