Table 6.

Factors affecting decreased problem-solving domain using regression analysis.

Variable	Problem-Solving *
	Coeff B	SE (B)	p-Value
Newborn vitamin D (ng/mL)	−0.641	0.175	<0.001
Parity	−0.217	2.434	0.929
Maternal occupation	−3.102	3.194	0.334
Maternal education	1.446	2.472	0.560
Gestation age	0.725	0.713	0.312
Exclusive breastfeeding (0 = no; 1 = yes)	−7.099	3.867	0.070
Sex (M = 1; F = 2)	6.345	2.206	0.005
Constant	−13.159	–

* R² = 21.4%.