. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: J Endod. 2012 Mar 21;38(5):589–593. doi: 10.1016/j.joen.2012.02.006

Table 3.

Quantification of accuracy, sensitivity, specificity, positive predictive value, negative predictive value, efficiency, positive likelihood ratio and negative likelihood ratio for self-reported history of endodontic treatment (SRHET) in relation to the presence of endodontic treatment (ET) and apical periodontitis (AP).

	ET (N=229)	AP (N=129)
Accuracy	0.899	0.705
Sensitivity	0.915	0.782
Specificity	0.891	0.689
Positive Predictive Value	0.824	0.353
Negative Predictive Value	0.949	0.936
Efficiency	0.903	0.736
Positive Likelihood Ratio	8.394	2.514
Negative Likelihood Ratio	0.095	0.316