Table 3 Sensitivity analyses expected costs and test performance
Strategy | Expected cost per patient (£) | True positives (%) | False positives (%) | True negatives (%) | False negatives (%) |
|---|---|---|---|---|---|
Sensitivity Analysis (a): | |||||
 Culture testing | 1916.00 | 0.5 | 6.7 | 92.7 | 0.0996 |
 PCR testing | 1704.24 | 0.6 | 3.4 | 96.0 | 0.024 |
 Cost difference with PCR testing (£) | −211.76 |  |  |  |  |
Sensitivity Analysis (b): | |||||
 Culture testing | 5639.07 | 0.6 | 18.7 | 80.7 | 0.0027 |
 PCR testing | 4791.70 | 0.6 | 3.4 | 96.0 | 0.024 |
 Cost difference with PCR testing (£) | −847.37 |  |  |  |  |
Sensitivity Analysis (c): | |||||
 Culture testing | 2165.82 | 5.0 | 17.8 | 77.2 | 0.023 |
 PCR testing | 1724.94 | 4.8 | 3.2 | 91.8 | 0.2 |
 Cost difference with PCR testing (£) | −440.88 |  |  |  |  |
Sensitivity Analysis (d): | |||||
 Culture testing | 2166.37 | 0.6 | 18.7 | 80.7 | 0.0027 |
 PCR testing | 1696.29 | 0.6 | 1.8 | 97.6 | 0 |
 Cost difference with PCR testing (£) | −470.08 |  |  |  |  |
Sensitivity Analysis (e): | |||||
 Culture testing | 2166.37 | 0.6 | 18.7 | 80.7 | 0.0027 |
 PCR testing | 1744.65 | 0.6 | 3.4 | 96 | 0.024 |
 Cost difference with PCR testing (£) | −421.72 |  |  |  |  |
Sensitivity Analysis (f): | |||||
 Culture testing | 2166.37 | 0.6 | 18.7 | 80.7 | 0.0027 |
 PCR testing | 1821.65 | 0.6 | 3.4 | 96 | 0.024 |
 Cost difference with PCR testing (£) | −344.72 |  |  |  |  |