Journal of Pregnancy / 2013 / Article / Tab 2

Research Article

Effects of Maternal Factors on Birth Weight in Japan

Table 2

Factors affecting the birth weight as determined by a multiple regression analysis (total).

Partial regression coefficient

Gestational age at delivery (/wks)160.081 (158.141–161.171)<0.0001
Primiparity (yes versus no)−104.796 (−112.232–−101.248)<0.0001
Cesarean delivery (yes versus no)−2.046 (−7.938–6.019)0.787
Weight gain during pregnancy (kg)16.269 (15.479–16.741)<0.0001
Female gender−107.150 (−112.585–−102.231)<0.0001
Induction of labor
(yes versus no)
Pregestational BMI (/1)22.250 (21.264–22.875)<0.0001
IVF-ET (yes versus no)37.404 (17.161–46.538)<0.0001
Smoking habit (yes versus no)−107.593 (−118.235–−93.763)<0.0001
Maternal height (/cm)10.270 (9.908–10.864) <0.0001
Maternal age (year)2.752 (2.117–3.188)<0.0001

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