Table 3. Correlation tests between phenotypic and genotypic patterns of clonal complexes’ resistance to ciprofloxacin, nalidixic acid, and tetracycline.
| Phenotypic versus genotypic resistance |
Correlation test | Correlation coefficient value | Standard error | Significance* (p-value) |
|---|---|---|---|---|
| Ciprofloxacin resistance versus C257T gyrA mutation |
Kendall's tau-b | 0.942 | 0.035 | p < 0.001 |
| Spearman Correlation | 0.973 | 0.019 | p < 0.001 | |
| Pearson's R | 0.996 | 0.003 | p < 0.001 | |
| Nalidixic acid resistance versus C257T gyrA mutation |
Kendall's tau-b | 0.962 | 0.025 | p < 0.001 |
| Spearman Correlation | 0.978 | 0.019 | p < 0.001 | |
| Pearson's R | 0.997 | 0.003 | p < 0.001 | |
| Tetracycline resistance versus presence of tet(O) |
Kendall's tau-b | 0.868 | 0.051 | p < 0.001 |
| Spearman Correlation | 0.922 | 0.044 | p < 0.001 | |
| Pearson's R | 0.950 | 0.039 | p < 0.001 |
* p-value < 0.05 indicates a statistically significant correlation