Multivariate analysis for the development of chronic pouchitis
| Covariate | HR | 95% CI | p Value |
| Sex | |||
| Male | 1 | N/A | 0.06 |
| Female | 2.95 | 1.0–8.47 | |
| Age at surgery | 0.98 | 0.94–1.02 | 0.26 |
| Family history | |||
| No | 1 | N/A | |
| Yes | 1.89 | 0.63–5.55 | 0.26 |
| Disease extent | |||
| Left sided | 1 | N/A | |
| Pancolitis | 1.96 | 0.60–6.06 | 0.26 |
| Extraintestinal disease | |||
| No | 1 | N/A | |
| Yes | 2.33 | 0.71–7.69 | 0.16 |
| High level pANCA | |||
| No | 1 | N/A | |
| Yes | 8.47 | 1.67–16.95 | 0.005 |
HR, hazard ratio; CI, confidence interval; pANCA, perinuclear antineutrophil cytoplasmic antibody positive; N/A, not applicable.