Survival benefit of primary tumor resection in pancreatic neuroendocrine tumors with unresectable liver metastases: A meta-analysis

Figure 3 Subgroup analysis of overall survival in pancreatic neuroendocrine tumor patients undergoing primary tumor resection vs non-resection treatment. A: Impact of different study designs (prospective vs retrospective) on overall survival following primary tumor resection vs non-resection treatment; B: Impact of different sample sizes (< 400 vs ≥ 400) on overall survival following primary tumor resection vs non-resection treatment. TE: Total effect; SE: Standard error; CI: Confidence interval.