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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 47 items
All items in category Meta-analysis 523 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

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

4121 visitors, last modified 27 Feb, 2013,

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Links to this page
- Levels of evidence for levels of vitamin D – Dec 2013

This page is in the following categories (# of items in each category)

Evidence for D 47 Intervention 688 Top news 849

Edit Comments Files 4

Attached files

ID	Name	Comment	Uploaded	Size	Downloads
2156	Evidence-based public health Victora - 2004.pdf	PDF	admin 27 Feb, 2013 22:46	92.44 Kb	687
2153	32-RCTs observational studies heirarchy Concato.pdf	PDF	admin 27 Feb, 2013 01:23	94.16 Kb	2349
2152	32-RCTs observar comparison Benson.pdf	PDF	admin 27 Feb, 2013 01:23	119.94 Kb	593
2151	32-RCTs obs meta-analyses Golder.pdf	PDF	admin 27 Feb, 2013 01:22	561.46 Kb	597

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# of studies as of July31, 2021