Characteristics of the low grade dysplasia (LGD) and no dysplasia groups
| LGD (n=29) | No dysplasia (n=97) | |
|---|---|---|
| Values are mean (range). | ||
| UC, ulcerative colitis. | ||
| Sex (M:F) | 13:16 | 48:49 |
| Age at the end of 1990 (y) | 52 (22–73) | 49 (22–72) |
| Duration of UC since diagnosis at end of 1990 (y) | 24 (14–47) | 18 (8–51) |
| No of colonoscopies at end of 1990 | 7.6 (2–12) | 3.9 (1–12) |