Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: The Effect of Antenatal Vitamin D Supplementation on Maternal-fetal Vitamin D Status and Neonatal Immune Function: a Randomized Controlled Trial in Bangladesh
Brief Summary: This study is a randomized placebo-controlled trial of oral weekly vitamin D3 (cholecalciferol) supplementation during the third trimester of pregnancy among women in Dhaka, Bangladesh. The overall goal of the study is to establish whether there is evidence that improving vitamin D status among pregnant women in Bangladesh will enhance the resistance of the infant offspring to infection.

The aims of the study are to assess the effect of supplementation on 1) maternal and infant vitamin D status (based on blood concentrations of a vitamin D metabolite) and, 2) markers of neonatal immune function.


Options:
A: Arm Label: Vitamin D3; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: Control; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Placebo control | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): Vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo control; Assigned to Arm(s): Control
B: Arm Label: A1 - non-pregnant single-dose; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: A2 - non-pregnant; weekly dose; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: B1 - pregnant; single-dose; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: B2 - pregnant; weekly dose; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: C1 - active control; pregnant women; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): A1 - non-pregnant single-dose, B1 - pregnant; single-dose | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): A2 - non-pregnant; weekly dose, B2 - pregnant; weekly dose | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): C1 - active control; pregnant women
C: Arm Label: Vitamin D treatment; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D 3 cholecalciferol, Dietary Supplement: Vitamin D3 | Arm Label: placebo; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D 3 cholecalciferol; Assigned to Arm(s): Vitamin D treatment | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): Vitamin D treatment, placebo
D: Arm Label: Prenatal Vitamin D3; Type: PLACEBO_COMPARATOR; Interventions: Drug: Prenatal Vitamin | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Drug: Prenatal Vitamin, Drug: Cholecalciferol (Vitamin D3) | Arm Label: 3; Type: EXPERIMENTAL; Interventions: Drug: Prenatal Vitamin, Drug: Cholecalciferol (Vitamin D3) | Intervention Type: DRUG; Name: Prenatal Vitamin; Assigned to Arm(s): 2, 3, Prenatal Vitamin D3 | Intervention Type: DRUG; Name: Cholecalciferol (Vitamin D3); Assigned to Arm(s): 2 | Intervention Type: DRUG; Name: Cholecalciferol (Vitamin D3); Assigned to Arm(s): 3

Answer: A