Interobserver Reliability among Radiologists and Orthopaedists in Evaluation of Chondral Lesions of the Knee by MRI

Table 1

Kappa statistics among orthopaedists, radiologists, and between orthopaedists and radiologists.

	Case = 1; 𝐾 (𝑃 value)	Case = 2; 𝐾 (𝑃 value)	Case = 3; 𝐾 (𝑃 value)	Case = 4; 𝐾 (𝑃 value)	Case = 5; 𝐾 (𝑃 value)	Case = 6; 𝐾 (𝑃 value)	All cases; 𝐾 (𝑃 value)
Orthopaedists	−0.13; (0.646)	0.31; (0.171)	0.02; (0.330)	0.29; (0.009)	0.15; (0.193)	0.11; (0.147)	0.22; (0.008)
Radiologists	0; (NA)	0.20; (0.050)	0.78; (<0.001)	0.27; (0.055)	0.06; (0.365)	0.53; (0.002)	0.37; (<0.001)
Orthopaedists and radiologists	−0.10; (0.809)*	0.24; (0.009)	0.06; (NC)	0.09; (0.146)	−0.06; (0.787)	0.15; (0.021)	0.17; (NC)**

NA: Not applicable.
NC: Not calculable due to missing response by a rater.