Healthy Skepticism Library item: 19377
Warning: This library includes all items relevant to health product marketing that we are aware of regardless of quality. Often we do not agree with all or part of the contents.
 
Publication type: Report
Wells G, Shea B, O'Connell D, Peterson J, Welch V, et al
The Newcastle-Ottawa Scale (NOS) for assessing the quality of nonrandomised studies in meta-analysis
OHRI 2005
http://www.ohri.ca/programs/clinical_epidemiology/oxford.asp