Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Assessment of Inflammatory Markers and Pregnancy Outcomes in Vitamin D-Supplemented Women at Risk of Vitamin D Deficiency: A Double-Blind, Randomized Controlled Trial
Brief Summary: Researchers at the USDA Western Human Nutrition Research Center and clinicians at UC Davis Medical Center are currently conducting a study on the effects of vitamin D supplementation during pregnancy on maternal health and immune function. The investigators believe that vitamin D supplementation at levels greater than the current recommendation is beneficial for maternal health during pregnancy. In particular, there is evidence that vitamin D deficiency during pregnancy puts women at greater risk for diseases like pre-eclampsia, which may be due to an imbalance in immune function at the placenta. This randomized, double-blind study is designed to test this hypothesis. Pregnant women who participate in the study receive either 400 IU or 2,000 IU of vitamin D per day for the duration of their pregnancy. The investigators will collect blood at three time points during pregnancy (16-20 weeks, 26-28 weeks, 36 weeks gestation) for analysis of immune function and vitamin D status. The investigators are also collecting data on clinical parameters, such as blood pressure and glucose tolerance.


Options:
A: Arm Label: 400 IU Vitamin D3; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: 400 IU vitamin D3 | Arm Label: 2,000 IU Vitamin D3; Type: EXPERIMENTAL; Interventions: Dietary Supplement: 2,000 IU Vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: 400 IU vitamin D3; Assigned to Arm(s): 400 IU Vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: 2,000 IU Vitamin D3; Assigned to Arm(s): 2,000 IU Vitamin D3
B: Arm Label: Vitamin D3 (cholecalciferol); Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 (cholecalciferol) | Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Other: Placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3 (cholecalciferol); Assigned to Arm(s): Vitamin D3 (cholecalciferol) | Intervention Type: OTHER; Name: Placebo; Assigned to Arm(s): Placebo
C: Arm Label: Group A; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Placebo | Arm Label: Group B; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: Group C; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: Group D; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Arm Label: Group E; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): Group B, Group C, Group D, Group E | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): Group A
D: Arm Label: Vitamin D; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Cholecalciferol D3 | Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Other: Placebo tablet | Intervention Type: DIETARY_SUPPLEMENT; Name: Cholecalciferol D3; Assigned to Arm(s): Vitamin D | Intervention Type: OTHER; Name: Placebo tablet; Assigned to Arm(s): Placebo

Answer: A