Table 3.
Verosimilarity ratio (VR) of different cut-off points of procalcitonin (PCT) concentration for the diagnosis of systemic infection in patients with febrile neutropenia.
| [PCT] ng/mL | With systemic infection (sensitivity) | Without systemic infection (1 - specificity) | Likelihood ratio* | (95% CI) |
| 0,245 | 26 100% |
18 69,2% |
1,44 | (Incalculable*) |
| 0,275 | 24 92,3% |
18 69,2% |
1,33 | (1,01 to 1,76) |
| 0,490 | 22 84,6% |
13 50,0% |
1,69 | (1,11 to 1,76) |
| 1,160 | 15 57,7% |
4 15,4% |
3,75 | (1,44 to 9,79) |
| 1,730 | 14 53,8% |
2 7,7% |
7,00 | (1,76 to 27,78) |
| 2,145 | 13 50,0% |
1 3,8% |
13,00 | (1,83 to 92,29) |
| 2,390 | 13 50,0% |
0 0% |
(Incalculable*) | |
| TOTAL | 26 100,0% |
26 100,0% |
* Impossible to calculate, for the values of sensitivity or of 1 - specificity correspond to 100% of the sample with or without the disease.