TABLE 3.
Distribution of concordant rates of participating laboratories: CDC results by organism and susceptibility testing method, vancomycin susceptibility tests, 1996
| Organism no. | MIC (μg/ml)a | Total no. (%) concordant results (n = 22)b | No. (%) of hospitals that used the following antimicrobial susceptibility test methodc:
|
||||
|---|---|---|---|---|---|---|---|
| Walkaway (n = 9) | Pasco (n = 5) | Kirby-Bauer (n = 2) | Autoscan (n = 3) | Others (n = 3)c | |||
| 1 | 512 | 20 (91) | 9 (100) | 5 (100) | 2 (100) | 3 (100) | 1 (33) |
| 2 | 64 | 13 (59) | 7 (78) | 2 (40) | 1 (50) | 2 (67) | 1 (33) |
| 3 | 16–32 | 17 (77) | 9 (100) | 3 (60) | 1 (50) | 3 (100) | 1 (33) |
| 4 | 8 | 11 (50) | 6 (67) | 1 (20) | 1 (50) | 2 (67) | 1 (33) |
| 5 | 2 | 23 (100) | 9 (100) | 5 (100) | 2 (100) | 3 (100) | 3 (100) |
a
MIC, actual MIC of vancomycin for each organism, as determined by CDC.
b
Percent is number of results concordant with CDC results/number of tests performed for each organism.
c
Others included Vitek (n = 1), Sceptor b-b (n = 1), and Placas CIM sensitive (n = 1).