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Publications· 2026Q1· Review

The Newcastle–Ottawa Scale for Assessing the Quality of Studies in Systematic Reviews

Emanuela Gualdi-Russo, Luciana Zaccagni

Short summary

The Newcastle–Ottawa Scale (NOS), a widely used tool for assessing observational study quality in systematic reviews, faces challenges due to noted ambiguities and subjectivity in its application.

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Statistics, Probability and UncertaintyDecision Sciences