444
Participants
Start Date
February 29, 2016
Primary Completion Date
December 1, 2019
Study Completion Date
December 1, 2019
Vitamin D Supplementation
Subjects in this group will receive initial dose of 2400, 3600, or 4800 IU of vitamin D3, based on her serum vitamin D level. Dose will be adjusted at 3 month visit to maintain serum vitamin D level at a desirable level.
Placebo
Subjects in this group will receive a placebo.
Calcium
If dietary calcium intake is insufficient in participants of either group, they will be given a calcium supplement in the form of one 600mg pill of CaCO3 to bring them up to an intake of 1200mg/day.
Winthrop University Hospital, Mineola
Winthrop University Hospital
OTHER
NYU Langone Health
OTHER