date:Jun 01, 2012
onfounding by indication, meaning that sick individuals or individuals at increased risk for chronic disease may have taken vitamin D supplements at a higher dose because of a disease-based motivation.
Source:The Journal of Clinical Endocrinology Metabolism
Published online ahead of print, doi:10.1210/jc.2012-1176
A Reverse J-Shaped Association of All-Cause Mortality with Serum 25-Hydroxyvitamin D in General Practice, the CopD Study
Authors: D. Durup, H. L. Jrgensen, J. Christensen, P. Schwarz