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Table 6 Confusion Matrix for Dichotomized traditional Tönnis Classification System

From: Binary Tönnis classification: simplified modification demonstrates better inter- and intra-observer reliability as well as agreement in surgical management of hip pathology

Surgeon-Recommended Treatment Observer 1 Observer 2 Observer 3 Observer 4 Observer 5
Preservation Replacement Preservation Replacement Preservation Replacement Preservation Replacement Preservation Replacement
A: First Round of Reads
 Preservation 19 0 19 0 10 9 17 2 19 0
 Replacement 4 17 5 16 2 19 5 16 5 16
B: Second Round of Reads
 Preservation 19 0 18 1 14 5 19 0 18 1
 Replacement 3 18 5 16 3 18 4 17 5 16