Table 3.
Positive predictive values of the combination of test results
Positive predictive value–median (CI) | |||||
---|---|---|---|---|---|
Model | Posterior estimates | STD and MOL +ve | Std +ve and MOL –ve | STD –ve and MOL +ve | STD and MOL –ve |
A | IN | 0.99 (0.98–1) | 0.93 (0.73–1) | 0.96 (0.87–0.99) | 0.37 (0.2–0.66) |
DE | 0.99 (0.95–1) | 0.99 (0.83–1) | 0.99 (0.92–1) | 0.75 (0.34–0.99) | |
B | IN | 0.9 (0.68–0.99) | 0.34 (0.02–0.84) | 0.58 (0.13–0.91) | 0.06 (0.002–0.3) |
DE | 0.72 (0.09–0.98) | 0.36 (0.004–0.98) | 0.61 (0.02–0.99) | 0.2 (0.006–0.87) |
STD, standard blood culture methods; MOL, molecular methods; CI, credible intervals (2.5–97.5%); IN, conditional independence assumption; DE, conditional dependence assumption