Table 2.
Resistance genes with significant differences between CR-AB and CS-AB.
| Resistance Genes | CR-AB (n = 18) | CS-AB (n = 21) | χ 2 | P-value | ||
|---|---|---|---|---|---|---|
| Strains (n) | Percentage (%) | Strains (n) | Percentage (%) | |||
| blaOXA-23 | 17 | 94.44 | 0 | 0.00 | 35.159 | <0.001 |
| blaOXA-66 | 17 | 94.44 | 0 | 0.00 | 35.159 | <0.001 |
| blaTEM-1 | 12 | 66.67 | 0 | 0.00 | 20.222 | <0.001 |
| armA | 15 | 83.33 | 0 | 0.00 | 28.438 | <0.001 |
| ANT(3″)-IIa | 17 | 94.44 | 4 | 19.05 | 22.170 | <0.001 |
| APH(3″)-Ib | 15 | 83.33 | 0 | 0.00 | 28.438 | <0.001 |
| APH(6)-Id | 15 | 83.33 | 0 | 0.00 | 28.438 | <0.001 |
| APH(3′)-Ia | 7 | 38.89 | 0 | 0.00 | – | 0.002 |
| mphD | 16 | 88.89 | 1 | 4.76 | 27.897 | <0.001 |
| msrE | 16 | 88.89 | 1 | 4.76 | 27.897 | <0.001 |
| adeC | 16 | 88.89 | 2 | 9.52 | 24.565 | <0.001 |
| tetB | 14 | 77.78 | 0 | 0.00 | 25.480 | <0.001 |
For APH (3′)-Ia, Fisher’s exact test was used due to two cells with expected counts <5, which provides exact p-values without relying on chi-square approximation (thus no chi-square statistic is reported).