TABLE 2.
Performance of the Reveal AST system for each species across all antimicrobials
| Species and reference | Reveal avg TTR (h) | No. of strainsa | No. of antibioticsb | No. of strains |
% Agreement (no./total no.) |
No. of errors |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Totalc | S | I | R | EA | CA | mE | ME | VME | ||||
| Sensititre as reference | ||||||||||||
| C. koseri | 4.1 | 1 | 22 | 22 | 22 | 0 | 0 | 100 (22/22) | 100 (22/22) | 0 | 0 | |
| E. cloacae | 4.5 | 3 | 19 | 57 | 49 | 2 | 6 | 98.2 (56/57) | 94.7 (54/57) | 2 | 0 | 1 |
| E. coli d | 4.5 | 66 | 24 | 1,584 | 1,300 | 43 | 241 | 98.2 (1,491/1518) | 96.2 (1,524/1584) | 56 | 3 | 1 |
| K. aerogenes | 4.4 | 2 | 19 | 38 | 30 | 2 | 6 | 97.4 (37/38) | 94.7 (36/38) | 1 | 0 | 1 |
| K. oxytoca d | 4.8 | 3 | 23 | 69 | 69 | 0 | 0 | 95.5 (63/66) | 95.7 (66/69) | 3 | 0 | |
| K. pneumoniae d | 4.6 | 16 | 23 | 368 | 302 | 6 | 60 | 98.3 (346/352) | 96.7 (356/368) | 10 | 1 | 1 |
| P. aeruginosa | 4.6 | 10 | 12 | 120 | 117 | 3 | 0 | 95.0 (114/120) | 94.2 (113/120) | 6 | 1 | |
| Overall | 101 | 2,258 | 1,889 | 56 | 313 | 98.0 (2,129/2,173) | 96.3 (2,174/2,258) | 78 | 5 | 4 | ||
| Vitek 2 as reference | ||||||||||||
| C. koseri | 4.1 | 1 | 14 | 14 | 14 | 0 | 0 | 100 (14/14) | 100 (14/14) | 0 | 0 | |
| E. cloacae | 4.5 | 3 | 13 | 39 | 33 | 3 | 3 | 97.4 (38/39) | 89.7 (35/39) | 3 | 0 | 1 |
| E. coli d | 4.5 | 67 | 17 | 1,139 | 935 | 19 | 185 | 97.6 (1,046/1,072) | 97.3 (1,108/1,139) | 26 | 3 | 2 |
| K. aerogenes | 4.4 | 2 | 13 | 26 | 20 | 2 | 4 | 92.3 (24/26) | 84.6 (22/26) | 4 | 0 | 0 |
| K. oxytoca d | 4.8 | 3 | 16 | 48 | 47 | 1 | 0 | 93.3 (42/45) | 93.8 (45/48) | 3 | 0 | |
| K. pneumoniae d | 4.6 | 17 | 16 | 272 | 218 | 14 | 40 | 95.7 (244/255) | 93.8 (255/272) | 16 | 1 | 0 |
| P. aeruginosa | 4.6 | 11 | 7 | 77 | 75 | 2 | 0 | 96.1 (74/77) | 97.4 (75/77) | 2 | 0 | |
| Overall | 104 | 1615 | 1342 | 41 | 232 | 97.0 (1,482/1,528) | 96.2 (1,554/1,615) | 54 | 4 | 3 | ||
a
Three strains do not have Sensititre results.
b
The number of antibiotics whose results are reported vary by species, because species-drug pairs with intrinsic resistance are excluded from the analysis.
c
Total number of AST results evaluated for each species against each comparator method.
d
ESBL screen results are not included in EA calculation for E. coli, K. oxytoca, and K. pneumoniae.