TABLE 4.
Comparison of antimicrobial resistance between integron-positive (n = 100) and integron-negative (n = 100) E. coli isolatesa
| Antimicrobial agent | Resistance frequency (%) |
Mean % | χ2 | P value | |
|---|---|---|---|---|---|
| Integron-positive isolates (n = 100) | Integron-negative isolates (n = 100) | ||||
| Aminoglycosides | |||||
| GM | 20 | 25 | 22.5 | 0.1 | >0.05 |
| STR | 50 | 37 | 43.5 | 2.93 | >0.05 |
| NN | 15 | 6 | 10.5 | 4.5 | <0.05 |
| Cephalosporins | |||||
| CFP | 31 | 15 | 23 | 6.35 | <0.05 |
| CRO | 26 | 27 | 26.5 | 0 | >0.05 |
| CZ | 37 | 54 | 40.5 | 5.16 | <0.05 |
| β-Lactams | |||||
| AM | 75 | 71 | 73 | 0.23 | >0.05 |
| Quinolones | |||||
| CIP | 36 | 19 | 27.5 | 6.42 | <0.05 |
| NOR | 36 | 6 | 21 | 27.12 | <0.05 |
| Macrolides | |||||
| AZM | 36 | 22 | 29 | 4.1 | <0.05 |
| Tetracyclines | |||||
| TE | 71 | 67 | 69 | 0.21 | >0.05 |
| Sulfonamides | |||||
| SXT | 46 | 36 | 41 | 1.67 | >0.05 |
| Rifamycins | |||||
| RA | 96 | 79 | 87.5 | 11.7 | <0.05 |
| Phenicols | |||||
| CHL | 79 | 84 | 81.5 | 0.67 | >0.05 |
| Carbapenem | |||||
| IPM | 0 | 0 | 0 | ||
| Lipopeptide | |||||
| PB | 2 | 8 | 5 | 2.63 | >0.05 |
| Nitrofuran | |||||
| F/M | 33 | 46 | 39.5 | 3.01 | >0.05 |
a
Differences in resistance between the two groups were established using the χ2 test and were considered significant at a P value of <0.05.