Critical evaluation of the Newcastle-Ottawa scale for the assessment of the quality of nonrandomized studies in meta-analyses

@article{Stang2010CriticalEO,
  title={Critical evaluation of the Newcastle-Ottawa scale for the assessment of the quality of nonrandomized studies in meta-analyses},
  author={Andreas Stang},
  journal={European Journal of Epidemiology},
  year={2010},
  volume={25},
  pages={603-605}
}
The quality assessment of non-randomized studies is an important component of a thorough meta-analysis of nonrandomized studies. Low quality studies can lead to a distortion of the summary effect estimate. Recent guidelines for the reporting of meta-analyses of observational studies recommend the assessment of the study quality (MOOSE) [1]. In principal, three categories of quality assessments tools are available: scales, simple checklists, or checklists with a summary judgment (for details see… CONTINUE READING
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The Newcastle-Ottawa Scale (NOS) for assessing the quality if nonrandomized studies in meta-analyses

  • GA Wells, B Shea, D O’Connell, J Peterson, V Welch, M Losos
  • 2009
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