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Table 2 Intra- and interreader reliability per imaging modality

From: Visual detection of cortical breaks in hand joints: reliability and validity of high-resolution peripheral quantitative CT compared to microCT

  Intrareader (reader 1) Interreader (reader 1 first reading versus reader 2)
  k (95 % CI) PABAK (95 % CI) ICC (95 % CI) k (95 % CI) PABAK (95 % CI) ICC (95 % CI)
HR-pQCT .52 (0.48 to 0.56) .53 (0.39 to 0.66) 0.61 (0.49 to 0.70) .37 (0.33 to 0.41) .38 (0.23 to 0.53) 0.55 (0.43 to 0.65)
μCT .71 (0.67 to 0.75) .72 (0.60 to 0.83) 0.75 (0.68 to 0.82) .45 (0.41 to 0.49) .47 (0.33 to 0.61) 0.54 (0.35 to 0.67)
  1. Intra- and interreader reliability of HR-pQCT and μCT images based on 152 quadrants for HR-pQCT and 148 quadrants on μCT. Kappa value was calculated on the presence of a cortical break (yes/no) and ICC was calculated on the total number of cortical breaks in all quadrants
  2. Abbreviations: PABAK prevalence-adjusted bias-adjusted kappa values, ICC intraclass correlation, HR-pQCT high resolution peripheral quantitative computed tomography, μCT microCT