Table 1.
Results of our cohort
| Vietnamese (n = 207) | Controls (n = 299) | |
|---|---|---|
| Mean age, years | 61.6 ± 8.9 | 61.6 ± 8.1 |
| Age at first colonoscopy, years | 58.2 ± 7.2 | 52.8 ± 6.4 |
| Sex predominance | 55% F | 56% M |
| (92 M/114 F) | (114 M/140 F) | |
| Symptomatic | 74 (36%) | 74 (25%) |
| Asymptomatic | 133 (64%) | 225 (75%) |
| Location | ||
| Cecum | 49 | 21 |
| Ascending colon | 95 | 32 |
| Transverse colon | 19 | 25 |
| Descending colon | 98 | 95 |
| Sigmoid colon | 111 | 212 |
| Colonoscopy findings | ||
| Associated polyps | 12 | 35 |
| Hemorrhoids | 148 (72%) | 166 (56%) |
| Malignancy | 1 | 2 |
| Stricture | 0 | 1 |
| Stenosis | 0 | 3 |
| Lipoma | 2 | 3 |
| Anal fissure | 0 | 2 |
| Lymphoid hypertrophy | 0 | 1 |
| Tubular rectum | 1 | 0 |
| Tortuous sigmoid | 1 | 0 |
| Hypertrophic anal papilla | 1 | 0 |
| Distribution | ||
| LD | ||
| Patients | 104 (50.5%) | 254 (84.9%) |
| Sex predominance | 57 M/47 F | 114 M/140 F |
| Symptomatic | 38 (51.4%) | 62 (24%) |
| Bleeding | 32 | 51 |
| Abdominal pain | 9 | 12 |
| Change in BM | 5 | 6 |
| Abdominal bloating | 0 | 0 |
| RD | ||
| Patients | 65 (31.1%) | 9 (3%) |
| Sex predominance | 34 M/30 F | 2 M/7 F |
| Symptomatic | 21 (28.3%) | 2 (22%) |
| Bleeding | 14 | 1 |
| Abdominal pain | 7 | 1 |
| Change in BM | 2 | 0 |
| Abdominal bloating | 0 | 0 |
| LD + RD | ||
| Patients | 38 (18.4%) | 36 (12%) |
| Sex predominance | 23 M/15 F | 16 M/20 F |
| Symptomatic | 15 (20.7%) | 10 (28%) |
| Bleeding | 10 | 4 |
| Abdominal pain | 2 | 2 |
| Change in BM | 3 | 5 |
| Abdominal bloating | 0 | 1 |
BM = Bowel movement.