Variable

Regression coefficient

Standard error

standardized regression coefficient

F value

P value

Constant term

461.12

478.74

0.86

0.35

Maternal age (years)

−9.76

4.19

−0.27

6.79

0.01

Pregnancy induced hypertension syndrome

−197.87

48.37

−0.34

17.51

<0.05

Newborn gestational age (weeks)

35.81

14.09

0.26

4.97

<0.05

Start time of lactation stage II

−1.83

0.84

−0.38

5.48

<0.05