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Table 7 Confusion Matrix for Binary 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 17 2 19 0 17 2
 Replacement 5 16 4 17 3 18 5 16 5 16
B: Second Round of Reads
 Preservation 19 0 19 0 16 3 19 0 16 3
 Replacement 4 17 5 16 4 17 4 17 5 16