Table 1. Analysis of agreement of independent assessment of radiographs. Radiologists 2 and 3 were compared with Radiologist 1.

Rater	Accuracy	Estimate % (95% CI)
Radiologist 2 (n=76)	Sensitivity	100.0 (88.4, 100.0)
	Specificity	80.4 (66.1, 90.6)
	Positive predictive value	76.9 (60.7, 88.9)
	Negative predictive value	100.0 (90.5, 100.0)
	Overall proportion correct	88.2 (78.7, 94.4)
Radiologist 3 (n=79)	Sensitivity	90.0 (73.5, 97.9)
	Specificity	89.8 (77.8, 96.6)
	Positive predictive value	84.4 (67.2, 94.7)
	Negative predictive value	93.6 (82.5, 98.7)
	Overall proportion correct	89.9 (81.0, 95.5)

CI, confidence interval.