Table 1.

Multiple linear regression model for placental efficiency

Predictor	Coefficient	Standard error of mean	P value	Adjusted Regression
Constant	1.304	1.415	0.366	0.576
Gender of fetus1	1.074	0.260	<0.001
Maternal age	0.073	0.027	0.011
BMI factor2	−0.568	0.257	0.037
Cytosolic CYP1A1 activity	5.668	2.323	0.022
Cytosolic protein yield	0.091	0.024	<0.001

¹Gender of the fetus (female = 0, male = 1).

²BMI factor – factorized maternal BMI (non-obese = 0, obese = 1).