Group distribution between cases and controls for adenomas with high grade dysplasia or colorectal cancer
| Cases High grade dysplasia or cancer (n=37) | Controls No high grade dysplasia or cancer (n=624) | p Value | |
|---|---|---|---|
| The p value is given for the comparison by global χ2 method of the relative frequency in the three groups of patients (irritable bowel syndrome (IBS), family history (FH), and heavy drinkers (HD) groups) of cases (patients with at least one adenoma with high grade dysplasia or a cancer) and controls (patients with a least one colorectal adenoma but without high grade dysplasia or cancer). | |||
| Age (mean (SD)) | 61 (2) | 57 (0.5) | 0.046 |
| Male/female ratio | 30/7 (81%) | 439/185 (70%) | NS |
| Patient groups | |||
| IBS | 5 (14%) | 147 (24%) | |
| FH | 2 (5%) | 106 (17%) | 0.048 |
| HD | 30 (81%) | 371 (59%) | |