Reasons for Exclusion (n = 303)
| Reason | No. (%) |
|---|---|
| Stage IV disease | 146 (48.2) |
| No participation in follow-up programa | 78 (25.7) |
| Hereditary colon carcinoma | 32 (10.6) |
| Death within 30 days postoperatively | 25 (8.3) |
| Carcinoma in patients with inflammatory bowel disease | 17 (5.6) |
| Other treatment regimenb | 5 (1.7) |
↵a No reason given (n = 31), because of age (n = 22), return to hospitals close to patients’ residences (n = 10), comorbidity (n = 5), lived in nursing home (n = 4), patients’ request for no participation in follow-up program (n = 4), and stage IV disease of another primary tumor (n = 2).
↵b Treatment with hyperthermic intraperitoneal chemotherapy, because of high risk of recurrences in patients without metastasis at diagnosis.