Table 4.

Summary of the various maternal-fetal outcomes studies with the level of evidence of association with vitamin D.

Outcomes	Total no. of studies (observational)	Total no. of studies (interventional)	Quality of evidence (GRADE system)
Preeclampsia	11	3	High
Gestational Diabetes Mellitus	8	6	High
Cesarean section	5	0	Moderate
Preterm Delivery	5	4	Moderate
Recurrent pregnancy loss	1	0	Low
Postpartum Depression	4	0	Moderate
Low Birth weight and Small for gestational age	9	2	High
Respiratory infections	5	0	Moderate
Immunity and allergies	4	2	Moderate
Anthropometry	1	4	High
Autism	0	1	Moderate