Features of postinfective bowel dysfunction 3 months after Campylobacter infection comparing cases versus controls
| Cases (n=22) | Controls (n=77) | RR (95% CI) | P value | |
| Stools often loose or watery? | 12 (55%) | 12 (16%) | 3.8 (1.9 to 7.4) | <0.001 |
| Stools often hard or lumpy? | 2 (9%) | 15 (19%) | 0.5 (0.1 to 1.5) | 0.347 |
| <3 bowel movements per week | 0 (0%) | 3 (4%) | 0 (0 to 2.6) | >0.999 |
| >3 bowel movements per day | 6 (27%) | 10 (13%) | 1.9 (0.9 to 3.9) | 0.185 |
| Presence of mucus | 1 (5%) | 1 (1%) | 2.3 (0.4 to 5.1) | 0.397 |
| Straining on defecation | 4 (18%) | 9 (12%) | 1.5 (0.6 to 3.2) | 0.477 |
| Sensation of incomplete evacuation | 10 (45%) | 18 (23%) | 2.1 (1.0 to 4.2) | 0.06 |
| Sensation of abdominal bloating | 13 (59%) | 14 (18%) | 3.9 (1.9 to 7.9) | <0.001 |
| Abdominal swelling | 8 (36%) | 6 (8%) | 3.5 (1.7 to, 6.4) | 0.002 |
| Urgency | 11 (50%) | 18 (23%) | 2.4 (1.2 to 4.8) | 0.031 |
| IBS by Rome III criteria? | 10 (45%) | 0 | N/A | N/A |
IBS, irritable bowel syndrome; N/A, not available.