This study shows a passing rate of 21% for MDs.
http://www.ncbi.nlm.nih.gov/pubmed/25834088
Only 8.9% of MDs passed the test of musculoskeletal conditions on this paper
http://www.ncbi.nlm.nih.gov/pubmed/19880882
26% passing rate on this paper.
http://www.ncbi.nlm.nih.gov/pubmed/17457065
79% failed.
http://www.ncbi.nlm.nih.gov/pubmed/15687152
http://www.ncbi.nlm.nih.gov/pubmed/25750952
DC had a passing rate of 51%
http://www.ncbi.nlm.nih.gov/pubmed/17224355
No wonder we have an opioid epidemic.
Craig Benton, D.C.