Table 6.
Organism | Drug | Interpretation | mecA positive | mecA negative | Percent | κa | 95% CIb | p-value | |||
---|---|---|---|---|---|---|---|---|---|---|---|
Percent | Number | Percent | Number | agreement | |||||||
S. pseudintermedius | Cefoxitin | Resistant | 97.4 | 1160/1191 | 2.6 | 31/1191 | 74.9% | 0.522 | 0.497 | 0.548 | < 0.0001 |
Susceptible | 37.9 | 797/2104 | 62.1 | 1307/2104 | |||||||
Oxacillin | Resistant | 95.4 | 1908/2001 | 4.7 | 93/2001 | 95.4% | 0.904 | 0.889 | 0.919 | < 0.0001 | |
Susceptible | 4.6 | 60/1311 | 95.4 | 1251/1311 | |||||||
S. aureus | Cefoxitin | Resistant | 96.7 | 117/121 | 3.3 | 4/121 | 95.3% | 0.834 | 0.714 | 0.953 | < 0.0001 |
Susceptible | 12.0 | 3/25 | 88.0 | 22/25 | |||||||
Oxacillin | Resistant | 95.9 | 117/122 | 4.1 | 5/122 | 94.0% | 0.787 | 0.653 | 0.920 | < 0.0001 | |
Susceptible | 16.0 | 4/25 | 84.0 | 21/25 | |||||||
S. coagulans | Cefoxitin | Resistant | 94.4 | 151/160 | 5.6 | 9/160 | 76.3% | 0.525 | 0.460 | 0.590 | < 0.0001 |
Susceptible | 31.1 | 121/389 | 68.9 | 268/389 | |||||||
Oxacillin | Resistant | 95.3 | 261/274 | 4.7 | 13/274 | 95.6% | 0.913 | 0.878 | 0.947 | < 0.0001 | |
Susceptible | 4.0 | 11/275 | 96.0 | 264/275 | |||||||
S. schleiferi | Cefoxitin | Resistant | 97.4 | 37/38 | 2.6 | 1/38 | 59.1% | 0.291 | 0.182 | 0.400 | < 0.0001 |
Susceptible | 57.3 | 51/89 | 42.7 | 38/89 | |||||||
Oxacillin | Resistant | 98.9 | 87/88 | 1.1 | 1/88 | 97.7% | 0.945 | 0.884 | 1.000 | < 0.0001 | |
Susceptible | 5.0 | 2/40 | 95.0 | 38/40 |
aKappa statistic for test of agreement
bConfidence interval