Table 1.
Comparison of sex, age, number, size, and location of polyps among patients with or without adenomatous polyps in all screening and no-screening colonoscopy (n=4,098)
| Variables | Adenomatous polyps (n=2,287) | Nonadenomatous polyps (n=1,811) | P-value |
|---|---|---|---|
| Sex | 0.825 | ||
| Women | 731 (56.1%) | 573 (43.9%) | |
| Men | 1,556 (55.7%) | 1,238 (44.3%) | |
| Mean age (years) | 56.1±11.9 | 52.5±12.0 | <0.001 |
| Number of polyps | <0.001 | ||
| 1 | 1,538 (51.2%) | 1,468 (48.8%) | |
| ≥2 | 749 (68.6%) | 343 (31.4%) | |
| Mean polyp size (cm) | 0.71±0.57 | 0.40±0.14 | <0.001 |
| Polyp size (cm) | <0.001 | ||
| ≤0.5 | 1,250 (44.6%) | 1,553 (55.4%) | |
| 0.6–0.9 | 546 (68.0%) | 257 (32.0%) | |
| ≥1.0 | 491 (99.8%) | 1 (0.2%) | |
| Location of polyps | <0.001 | ||
| Distal colon | 1,356 (51.8%) | 1,263 (48.2%) | |
| Proximal colon | 566 (58.8%) | 396 (41.2%) | |
| Bilateral colon | 365 (70.6%) | 152 (29.4%) |