Table 4

Prediction of intervals of a rapid diagnostic test’s expected positive predictive value within the validation cohort according to uncorrected and corrected scores
Corrected
[0,40] (40,60] (60,80] (80,100] Observed
uncorr. [0,40] 173 0 0 0 0.0 (0/4)
(40,60] 226 520 0 0 40.0 (8/20)
(60,80] 0 584 433 0 60.0 (18/30)
(80,100] 0 0 25 82 88.9 (8/9)
observed 25.0 (2/8) 47.1 (16/34) 71.4 (10/14) 85.7 (6/7)

Round and square brackets specify values excluded or included, respectively, from the interval. Values in parentheses in row and column labeled “observed” represent quotients of true positives divided by all positives within the interval.

Elias et al.

Elias et al. BMC Infectious Diseases 2013 13:111   doi:10.1186/1471-2334-13-111

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