TABLE 5.
Evaluation of agreement between Sensititre-derived colistin MICs via manual reads and MICs from agar dilutiona
| Isolate | n | Results for operator A (manual n = 17) |
Results for operator B (manual n = 129) |
||||
|---|---|---|---|---|---|---|---|
| n CA (%) |
n mE (%) |
n CA (%) |
n mE (%) |
||||
| False R | False I | False R | False I | ||||
| Enterobacter cloacae complex | 19 | 18 (95) | 0 | 1 (5) | 16 (84) | 0 | 3 (16) |
| Escherichia coli | 20 | 19 (95) | 1 (5) | 0 | 19 (95) | 1 (5) | 0 |
| Klebsiella aerogenes | 4 | 3 (75) | 1 (25) | 0 | 3 (75) | 1 (25) | 0 |
| Klebsiella pneumoniae | 30 | 28 (93) | 2 (7) | 0 | 28 (93) | 2 (7) | 0 |
| Raoultella ornithinolytica | 1 | 1 (100) | 0 | 0 | 1 (100) | 0 | 0 |
| Total Enterobacterales | 74 | 69 (93) | 4 (5) | 1 (1) | 67 (91) | 4 (5) | 3 (4) |
| Acinetobacter baumannii complex | 28 | 28 (100) | 0 | 0 | 21 (75) | 7 (7) | 0 |
| Pseudomonas aeruginosa | 27 | 27 (100) | 0 | 0 | 26 (96) | 1 (4) | 0 |
| Total non-Enterobacterales | 55 | 55 (100) | 0 | 0 | 47 (85) | 8 (15) | 0 |
| Total isolates | 129 | 124 (96) | 4 (3) | 1 (1) | 114 (88) | 12 (9) | 3 (2) |
a
CA, categorical agreement; mE, minor error; false R, false resistance, AD MIC intermediate and Sensititre BMD MIC resistant; false I, false intermediate, AD MIC resistant and Sensititre BMD MIC intermediate. Operator A, manual reads for 17 isolates were used as MIC calls and the automated MIC calls were used for the remaining 112 isolates. Operator B, manual reads for all 129 isolates in this collection of clinical isolates were used as MIC calls for this data set.