Pathological examination results | Young and middle-aged group | Elderly group | P-value |
adenomatous polyp | 34 (52.31) | 27 (77.14) | <0.05 |
inflammatory polyp | 18 (27.69) | 2 (5.71) | <0.05 |
benign tumors | 11 (16.92) | 2 (5.71) | >0.05 |
malignant tumors | 1 (1.54) | 4 (11.43) | >0.05 |
hyperplastic polyp | 1 (1.54) | 0 (0.00) | >0.05 |