Articles excluded from the meta-analysis due to incomplete European Neuroendocrine Tumor Society (ENETS) grading system and/or Kaplan–Meier plots only
| Author | Patient demographic | Ki-67 notes | ||
|---|---|---|---|---|
| Ki-67 labelling index (%) | 5-Year survival (%) | No. | ||
| Panzuto et al14 | 185 consecutive patients (96 patients stained), pancreatic endocrine tumour+gastrointestinal carcinoids. Surgical resection and biopsy | ≤2 | 90.1 | 58 |
| >2 | 53.5 | 38 | ||
| Bettini et al15 | 180 consecutive patients (49 patients stained), non-functioning pancreatic tumours. Surgical resection only | ≤2 | 93.7 | 77 |
| >2 | 50.2 | 75 | ||
| Hamilton et al12 | 140 consecutive patients, pancreatic neuroendocrine tumours (NETs). Surgical resection and biopsy | ≤2 | 89 | 43 |
| 3–20 | 80 | 78 | ||
| >20 | 20 | 19 | ||
| Hoej et al16 | 161 consecutive patients, small intestine NETs tumours. Surgical resection only | ≤2 | 85 | |
| 3–20 | 50 | |||
| >20 | 0 | |||
| Ahmed et al13 | 360 consecutive patients (112 stained) midgut NETs with liver metastases. Surgical resection and biopsy | ≤2 | 82 | 60 |
| >2–20 | 65 | 45 | ||
| >20 | 0 | 6 | ||