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Table 2 Results of blinded re-rating of 100 subjects with pediatric DPLD by two independent raters and reasons for incorrect rating (see individual values in Additional file 3: Table S2)

From: Categorizing diffuse parenchymal lung disease in children

  Blinded rater 1 Blinded rater 2
  Category Subcategory Category Subcategory
Correct categorization 80 82 92 84
Non-correct categorization 20 18 8 16
1 Reports not appreciated/read in detail (= true mistake of rater) 5 8 2 6
2 Poor knowledge of the classification rules 3 4 2 4
3 Insufficient data on case 8 0 2 2
4 Deficit of the classification system 4 6 2 4
  1. Data are absolute numbers (total n = 100) or %