Table 2. Comparison between the study groups according to frequency of E. coli pathotypes and phylogenetic groups.
| Active UC (n = 15) | Inactive UC (n = 15) | Active CD (n = 15) | Inactive CD (n = 15) | Controls (n = 20) | χ2 | P value | |
|---|---|---|---|---|---|---|---|
| E. coli pathotype | |||||||
| EAEC | 3a (20%) | 3a (20%) | 6a (40%) | 3a (20%) | 0b (0%) | 9.108 | 0.058 |
| ETEC | 0 (0%) | 1 (6.7) | 0 (0%) | 1 (6.7%) | 0 (0%) | 3.217 | 0.522 |
| EPEC (atypical) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 1 (5%) | 2.887 | 0.577 |
| E. coli phylogenetic group | |||||||
| A | 6 (40%) | 4 (26.7%) | 5 (33.3%) | 6 (40%) | 10 (50%) | 2.372 | 0.668 |
| B1 | 0 (0%) | 2 (13.3%) | 0 (0%) | 0 (0%) | 0 (0%) | 8.487 | 0.075 |
| B2 | 6 (40%) | 7 (46.7%) | 8 (53.3%) | 9 (60%) | 10 (50%) | 2.628 | 0.622 |
| D | 3 (20%) | 2 (13.3%) | 2 (13.3%) | 0 (0%) | 0 (0%) | 6.523 | 0.163 |
CD – Crohn's disease; EAEC – enteroaggregative E. coli; EPEC – enteropathogenic E. coli; ETEC – enterotoxigenic E. coli; UC – ulcerative colitis. The Chi square test was used for comparing the different groups. In the first row, different letters indicate statistical significance.