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Table 3 Accuracy of histopathological classification

From: Validation study of villous atrophy and small intestinal inflammation in Swedish biopsy registers

 

Samples mailed

to pathologists

Not

Responding

Correctly

classified

Worst case

Scenario#

Normal*

84

7 (8%)

74/77 (96%)

74/84 (88%)

Inflammation*

42

3 (7%)

22/39 (56%)§

22/42 (52%)

Villous atrophy*

231

21 (9%)

190/210 (90%)

190/231 (82%)

  1. * According to gold standard (= grading by the Swedish National Steering Group for Small Intestinal Pathology).
  2. # Assuming that all missing responses were incorrect.
  3. § Of the misclassified 17 samples with inflammation (according to the steering group, i.e. gold standard), 12 were classified as normal, and 5 as villous atrophy.