Table 3 Comparison of the provisional and revised scores
Derivation study (N = 172) | Validation study (N = 154) | |||||
|---|---|---|---|---|---|---|
Clinical diagnosis | Provisional ABC score | Revised ABC score | Revised ABC score | |||
AI | Co | AI | Co | AI | Co | |
Active Infection | 47 | 1 | 45 | 3 | 15 | 1 |
Colonization | 38 | 60 | 7 | 91 | 13 | 125 |
Sensitivity | 97.9% (47/48) | 93.8% (45/48) | 93.8% (15/16) | |||
Specificity | 61.2% (60/98) | 92.9% (91/98) | 90.6% (125/138) | |||
Concordance rate | 73.3% (107/146) | 93.2% (136/146) | 90.9% (140/154) | |||
Positive predictive value | 55.3% (47/85) | 86.5% (45/52) | 53.6% (15/28) | |||
Negative predictive value | 98.4% (60/61) | 96.8% (91/94) | 99.2% (125/126) | |||