Baseline and demographic characteristics of control subjects with and without colorectal neoplastic lesions
| Control group (n=550) | Without colonoscopic lesions (n=514, 93.5%) | Advanced adenomas (n=11, 2%) | Non-advanced adenomas (n=13, 20.4%) | Colorectal carcinoma (n=12, 2.2%) | P value | |
| Age (years±SD) | 56.58±10.59 | 56.17±9.8 | 56.98±10.1 | 61.26±9.87 | 66.28±10.19 | 0.25 |
| Gender (F/M)(%) | 364/186 (66.2/33.8) | 347/167 (67.5/32.5) | 3/8 (27.3/72.7) | 4/9 (30.8/69.2) | 6/6 (50/50) | <0.001 |
| Body mass index (kg/m2) | 27.31±2.78 | 27.2±2.48 | 27.69±2.3 | 27.21±3.1 | 28.12±2.14 | 0.13 |
| Inflammation (+/−) | 538/12 (97.8/2.2%) | 502/12 (97.7/2.3%) | 11/0 (100/0%) | 13/0 (100/0%) | 12/0 (100/0%) | 0.29 |
| Activity (+/−) | 544/6 (98.9/1.1%) | 508/6 (98.8/1.2%) | 11/0 (100/0%) | 13/0 (100/0%) | 12/0 (100/0%) | 0.41 |
| Intestinal metaplasia (+/−) | 204/346 (37.1/62.9%) | 170/344 (33/67%) | 9/2 (81.8/18.2%) | 13/0 (100/0%) | 12/0 (100/0%) | <0.001 |
| Lower gastrointestinal symptoms/iron deficiency | 339/211 (61.6/38.4%) | 326/188 (63.4/36.6%) | 6/5 (54.5/45.5%) | 8/5 (61.5/38.5%) | 0/12 (0/100%) | <0.001 |