TABLE 2.
Baseline characteristics of patients with ulcerative colitis according to distribution of lesions
|
Distribution
|
P | ||
|---|---|---|---|
| Typical (n=194) | Atypical (n=46) | ||
| Age at diagnosis, years* | 41 (17–80) | 41 (17–71) | 0.217 |
| Sex | 1.000 | ||
| Male | 107 (55.2) | 25 (54.3) | |
| Female | 87 (44.8) | 21 (45.7) | |
| Smoking | 0.880 | ||
| Never smoker | 105 (54.1) | 26 (56.5) | |
| Current smoker | 37 (19.1) | 7 (15.2) | |
| Ex-smoker | 52 (26.8) | 13 (28.3) | |
| Duration of symptoms before diagnosis, months* | 4.0 (0–123) | 5.6 (0–369) | 0.530 |
| pANCA | 0.306 | ||
| Positive | 67 (34.5) | 20 (43.5) | |
| Negative | 127 (65.5) | 26 (56.5) | |
| Initial disease extent | 0.816 | ||
| Proctitis | 106 (54.6) | 19 (41.3) | |
| Left-sided colitis | 42 (21.6) | 9 (19.6) | |
| Extensive colitis | 46 (23.7) | 10 (21.7) | |
| Segmental | 8 (17.4) | ||
| Initial endoscopic disease activity | 0.310 | ||
| Mild | 79 (40.7) | 22 (47.8) | |
| Moderate | 70 (36.1) | 18 (39.1) | |
| Severe | 45 (23.2) | 6 (13.0) | |
| AOI | 68 (35.1) | 31 (67.4) | <0.001 |
Data presented as n (%).
*
Data presented as median (range). AOI Appendiceal orifice inflammation; pANCA Perinuclear antineutrophil cytoplasmic antibody