From: Fast and accurate prediction of positive and negative urine cultures by flow cytometry
Cut-off | TP | FP | TN | FN | Sensitivity | Specificity | PPV | NPV |
---|---|---|---|---|---|---|---|---|
A (≥105 CFU/mL. n = 79) | ||||||||
≥105 | 79 | 128 | 2 | 0 | 100 % | 2 % | 38 % | 100 % |
≥106 | 78 | 55 | 75 | 1 | 99 % | 58 % | 59 % | 99 % |
≥107 | 65 | 9 | 121 | 14 | 82 % | 93 % | 88 % | 90 % |
≥108 | 37 | 1 | 129 | 42 | 47 % | 99 % | 99 % | 75 % |
B (≥104 CFU/mL. n = 100) | ||||||||
≥105 | 100 | 107 | 1 | 1 | 99 % | 1 % | 48 % | 50 % |
≥106 | 91 | 42 | 66 | 10 | 90 % | 61 % | 68 % | 87 % |
≥107 | 67 | 7 | 101 | 34 | 66 % | 94 % | 91 % | 75 % |
≥108 | 37 | 1 | 107 | 64 | 37 % | 99 % | 97 % | 63 % |
C (≥103 CFU/mL. n = 146) | ||||||||
≥105 | 146 | 61 | 0 | 2 | 99 % | 0 % | 71 % | 0 % |
≥106 | 117 | 16 | 45 | 31 | 79 % | 74 % | 88 % | 59 % |
≥107 | 73 | 1 | 60 | 75 | 49 % | 98 % | 99 % | 44 % |
≥108 | 38 | 0 | 61 | 110 | 26 % | 100 % | 100 % | 36 % |