Table 3

Quality appraisal using a checklist for prescriptive, derivation-based clinical prediction rules (QUADCPR)

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  • Black shading, ‘yes’; grey shading, ‘unclear’; white (no shading), ‘no’.

  • Inter-rater agreement between the quality assessors was 92% across all 13 papers.

  • *Modified in accordance with the TRIPOD statement23 recommendation for a minimum of 10 participants in the limiting sample size (ie, those who experienced the least frequent outcome) for each potential predictor variable included in the analysis.