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. Author manuscript; available in PMC: 2015 Aug 11.
Published in final edited form as: Int Braz J Urol. 2009 Mar-Apr;35(2):171–182. doi: 10.1590/s1677-55382009000200007

Table 3.

Summary of overall diagnostic accuracy.

Reference Results Diagnostic Accuracy
N Pos Neg TP FN FP TN Se (95% CI) Sp (95% CI) PPV (95% CI) NPV (95% CI) +LR (95% CI) -LR (95% CI)
Reader 1 59 34 25 21 13 9 16 0.62 (0.45-0.76) 0.64 (0.45-0.80) 0.7 (0.52-0.83) 0.55 (0.38-0.72) 1.72 (0.96-3.08) 0.6 (0.36-1.0)
Reader 2 59 34 25 23 8 9 19 0.74 (0.57-0.86) 0.68 (0.49-0.82) 0.72 (0.55-0.84) 0.7 (0.52-0.84) 2.31 (1.3-4.11) 0.38 (0.2-0.73)

N = sample size; Pos = positive; Neg = negative; TP = true-positive; FN = false-negative; FP = false-positive; TN = true-negative; Se = sensitivity; Sp = specificity; PPV = positive predictive value; NPV = negative predictive value; +LR = likelihood ratio of a positive result; -LR = likelihood ratio of a negative result.