Can Observational Studies be as good as Random Controlled Trials for Vitamin D

Dr. Grant is looking at extending the power of Observational Studies in place of RCT for Vitamin D as of Feb 2013

The source PDF files of previous studies are attached at the bottom of this page

See also VitaminDWiki

• Summary of Vitamin D trials - Grant Nov 2012
• All items in category Vitamin D Evidence 60 items
• All items in category Meta-analysis 665 items
• 101 vitamin D INVERVENTION trials added during first 7 months of 2012
• Proof that Vitamin D Works 24 items. mostly RCT, as of Feb 2013

short url = http://is.gd/OSRCT