Method glossary

Newcastle-Ottawa

Scale for appraising the quality of cohort and case-control studies.

Source

The Newcastle-Ottawa Scale (NOS) for assessing the quality of nonrandomised studies in meta-analyses
Ottawa Hospital Research Institute (Ottawa Methods Centre)
https://www.ohri.ca/programs/clinical_epidemiology/oxford.asp

Where, in the source

the three star categories — Selection, Comparability, Outcome/Exposure

Checked at the source on

2026-06-13

Verbatim

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The wording of this entry is ours, written for people outside the field. The concept and its limits come from the source above, against which this wording is checked — it is neither a translation nor a copy of it.

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