Table 1.
Demographics and endoscopic findings of asymptomatic health check-up subjects (n = 1899).
| Clinical characteristics | |
|---|---|
| Age, n (%) | |
| Mean (SD) yr. | 52.8 (10.6) |
| <45 yr. | 393 (20.7) |
| 45–60 yr. | 1038 (54.7) |
| >60 yr. | 468 (24.6) |
| Height, cm | 165.8 (8.2) |
| Weight, kg | 66.2 (12.3) |
| Gender, n (%) | |
| Men | 1203 (63.3) |
| Women | 696 (36.7) |
| Body mass index, n (%) | |
| Mean (SD) | 23.9 (3.4) |
| <25 | 1233 (64.9) |
| 25–30 | 573 (30.2) |
| >30 | 93 (4.9) |
| Educational level, n (%) | |
| Middle school | 144 (7.6) |
| High school | 799 (42.1) |
| University | 641 (33.7) |
| Graduate school | 315 (16.6) |
| Yearly salary (US dollar), n (%) | |
| Less than 10,000 | 182 (9.6) |
| From 10,000 to 30,000 | 984 (51.8) |
| More than 30,000 | 733 (38.6) |
| Colonoscopic findings, n (%) | |
| Normal | 1379 (72.6) |
| Colorectal polyps | 520 (27.4) |
| Pathological type | |
| Hyperplastic polyps | 210 (11.1) |
| Adenomatous polyps | 305 (16.1) |
| Sessile serrated adenoma | 34 (1.8) |
| Traditional serrated adenoma | 14 (0.7) |
| Location | |
| Proximal colon only | 99 (5.2) |
| Distal colon only | 343 (18.1) |
| Both | 78 (4.1) |