TABLE 2.
Univariate analysis of adenoma factors relative to the occurrence of HGD.
| Adenoma (N = 9,427) | HGD (N = 219) | P-value | ||
| N (%) | N (%) | |||
| Sex | X2 = 0.168 | 0.681 | ||
| Male | 6,067 (62.9) | 138 (1.4) | ||
| Female | 3,360 (34.8) | 81 (0.8) | ||
| Age | X2 = 27.192 | <0.001 | ||
| <50 | 2,320 (24.1) | 24 (0.3) | ||
| 50–64 | 4,266 (44.2) | 102 (1.1) | ||
| ≥65 | 2,934 (30.4) | 93 (1.0) | ||
| Size | X2 = 1,275.171 | <0.001 | ||
| ≤1 cm | 7,435 (77.1) | 26 (0.3) | ||
| 1–2 cm | 1,708 (17.7) | 98 (1.0) | ||
| 2–3 cm | 213 (2.2) | 47 (0.5) | ||
| >3 cm | 71 (0.7) | 48 (0.5) | ||
| Amount | X2 = 58.958 | <0.001 | ||
| 1 | 5,187 (53.8) | 73 (0.8) | ||
| 2–3 | 2,622 (27.2) | 69 (0.7) | ||
| >3 | 1,618 (16.8) | 77 (0.8) | ||
| Morphology | X2 = 38.394 | <0.001 | ||
| Sessile | 4,017 (41.6) | 97 (1.0) | ||
| Flat | 2,614 (27.1) | 24 (0.2) | ||
| Pedunculated | 2,796 (29.0) | 98 (1.0) | ||
| Location | X2 = 46.030 | <0.001 | ||
| Proximal | 4,193 (43.5) | 47 (0.5) | ||
| Distal | 5,234 (54.3) | 172 (1.8) |
HGD, high-grade dysplasia. Distal = descending colon, rectum, and sigmoid colon; proximal = above the descending colon.