Table 3.
Clinical aspects of patients with ulcerative colitis (n = 152) at the time of diagnosis according to the modified Montreal classification in Piauí (Brazil), 1988-2012
| Phenotypic elements | n (%) | Female, n (%) | Male, n (%) | |
| Age at diagnosis (A)1 | A1: ≤ 16 yr old | 7 (4.6) | 3 (42.9) | 4 (57.1) |
| A2: 17-40 yr old | 88 (57.9) | 56 (63.6) | 32 (36.4) | |
| A3: > 40 yr old | 57 (37.5) | 38 (66.7) | 19 (33.3) | |
| Disease extent (E) | E1: Ulcerative proctitis | 14 (9.2) | 9 (64.3) | 5 (35.7) |
| E2: Keft-sided ulcerative colitis | 93 (61.2) | 63 (67.7) | 30 (32.3) | |
| E3: Extensive ulcerative colitis (pancolitis) | 45 (29.6) | 25 (55.6) | 20 (44.4) | |
| Disease severity (S) | S1: Mild | 41 (27.0) | 28 (68.3) | 13 (31.7) |
| S2: Moderate | 60 (39.5) | 40 (66.7) | 20 (33.3) | |
| S3: Severe | 51 (33.5) | 29 (56.9) | 22 (43.1) | |
1
Age at diagnosis is not a phenotypic element of the Montreal classification for ulcerative colitis.