Table 8 Contingency table between Phylogroup and number of virulence factors. Chi-square test; p-value = 0.0325
From: Comparative genomics of European avian pathogenic E. Coli (APEC)
| Number of virulence factors | |||||||||||
| 1 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ||
| A | 1 | 0 | 0 | 1 | 3 | 1 | 2 | 1 | 0 | 0 | |
| Phylogroup | A1 | 0 | 1 | 1 | 4 | 2 | 6 | 8 | 3 | 0 | 0 |
| B1 | 0 | 2 | 2 | 1 | 1 | 2 | 0 | 0 | 0 | 1 | |
| B2 | 0 | 2 | 0 | 6 | 8 | 5 | 15 | 3 | 3 | 0 | |
| D | 0 | 0 | 1 | 0 | 4 | 2 | 2 | 0 | 1 | 0 | |