Table 1 Sensitivity, specificity, predictive values, diagnostic accuracy and likelihood ratios of reused Pronto Dry® test and reused CLOtest® for H. pylori infection
Parameter | Reused Pronto Dry® % (95 % CIa) | Reused CLOtest® % (95 % CIa) | ||
|---|---|---|---|---|
Sensitivity | 72.60 % | (61.44, 81.51) | 93.15 % | (84.95, 97.04) |
Specificity | 98.81 % | (96.99, 99.54) | 99.41 % | (97.86, 99.84) |
Positive predictive value | 92.98 % | (83.30, 97.24) | 97.14 % | (90.17, 99.21) |
Negative predictive value | 94.33 % | (91.41, 96.30) | 98.53 % | (96.60, 99.37) |
Diagnostic accuracy | 94.15 % | (91.44, 96.04) | 98.29 % | (96.52, 99.17) |
Likelihood ratio of a positive test | 61.17 | (36.95 – 101.20) | 157 | (58.78 – 419.1) |
Likelihood ratio of a negative test | 0.27 | (0.25 – 0.31) | 0.07 | (0.05 – 0.10) |
Diagnostic odds | 220.60 | (72.56 – 670.70) | 2278 | (432.9 – 11990) |
Cohen’s kappa (Unweighted) | 0.78 | (0.69 – 0.88) | 0.94 | (0.84 – 1.03) |