Newcastle-Ottawa Scale

From Wikipedia, the free encyclopedia

Also known as NOS. A validated method assessing the quality of nonrandomised studies in meta-analyses.

The scales allocate stars, maximum 9, for quality of selection, comparability, exposure and outcome of study participants.

The method was developed as a collaboration between the Universities of Newcastle, Australia and Ottawa, Canada.

[edit] External link

[1] http://www.ohri.ca/programs/clinical_epidemiology/oxford.htm