Table 6.
Evaluation of the performance of the algorithms to correctly classify bacterial species or groups.
| Group | N Acc | Acc | CI (Acc) | N Se | Se | CI (Se) | N Sp | Sp | CI (Sp) | N PPV | PPV | CI (PPV) | N NPV | NPV | CI (NPV) | N Prev | Prev | CI (Prev) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ESCCOL | 42,611 | 99.6 | (99.6, 99.7) | 3288 | 96.4 | (95.6, 97.0) | 39,323 | 99.9 | (99.9, 99.9) | 3209 | 98.8 | (98.3, 99.1) | 39,402 | 99.7 | (99.6, 99.7) | 42,611 | 7.7 | (7.5, 8.0) |
| Group Enter | 42,611 | 99.1 | (99.0, 99.2) | 4744 | 93.8 | (93.1, 94.4) | 37,867 | 99.8 | (99.7, 99.8) | 4530 | 98.2 | (97.9, 98.6) | 38,081 | 99.2 | (99.1, 99.3) | 42,611 | 11.1 | (10.8, 11.5) |
| Group KESC | 42,611 | 98.3 | (98.2, 98.4) | 17,685 | 98.9 | (98.8, 99.1) | 24,926 | 97.9 | (97.7, 98.1) | 18,028 | 97.1 | (96.8, 97.3) | 24,583 | 99.2 | (99.1, 99.3) | 42,611 | 41.5 | (41.0, 42.1) |
| Group PMP | 42,611 | 99.3 | (99.2, 99.4) | 7470 | 97.6 | (97.3, 98.0) | 35,141 | 99.7 | (99.6, 99.7) | 7416 | 98.4 | (98.0, 98.6) | 35,195 | 99.5 | (99.4, 99.6) | 42,611 | 17.5 | (17.1, 17.9) |
| STAAUE | 42,611 | 99.7 | (99.7, 99.8) | 3965 | 99.2 | (99.0, 99.5) | 38,646 | 99.8 | (99.7, 99.8) | 4014 | 98.0 | (97.6, 98.5) | 38,597 | 99.9 | (99.9, 99.9) | 42,611 | 9.3 | (9.0, 9.6) |
| STASAP | 42,611 | 99.5 | (99.5, 99.6) | 2799 | 97.6 | (97.1, 98.1) | 39,812 | 99.7 | (99.6, 99.7) | 2864 | 95.4 | (94.8, 96.2) | 39,747 | 99.8 | (99.8, 99.9) | 42,611 | 6.6 | (6.3, 6.8) |
| STRAGA | 42,611 | 99.6 | (99.5, 99.7) | 2660 | 94.8 | (93.6, 95.7) | 39,951 | 99.9 | (99.9, 100.0) | 2550 | 98.9 | (98.3, 99.3) | 40,061 | 99.7 | (99.6, 99.7) | 42,611 | 6.2 | (6.0, 6.5) |
Abbreviations: Group: Bacterial species or groups; N Acc: Number of sample analyzed for accuracy; Acc: Accuracy; CI (Acc): 95% confidence interval for Acc; N Se: Number of sample analyzed for sensitivity; Se: Sensitivity; CI (Se): 95% confidence interval for Se; N Sp: Number of sample analyzed for specificity; Sp: Specificity; CI (Sp): 95% confidence interval for Sp; N PPV: Number of sample analyzed for PPV; PPV: positive predictive value; CI (PPV): 95% confidence interval for PPV; N NPV: Number of sample analyzed for NPV; NPV: Negative predictive value; CI (NPV): 95% confidence interval for NPV; N Prev: Number of sample analyzed for Prev; Prev: Prevalence; CI (Prev): 95% confidence interval for Prev; ESCCOL: Escherichia coli; Group Enter: Group Enterococcus spp.; Group KESC: Group Klebsiella spp./Enterobacter spp./Serratia spp./Citrobacter spp.; Group PMP: Group Proteus spp./Morganella spp./Providencia spp.; STAAUE: Staphylococcus aureus; STASAP: Staphylococcus saprophyticus; STRAGA: Streptococcus agalactiae.