A propensity score matched cost analysis of robotic versus open hepatectomy

Abstract

Introduction: Cost-effectiveness of Robotic-assisted hepatectomy compared to the open approach is scrutinized. We compared the costs of robotic versus open hepatectomy at a large cancer center.

Methods: Patients undergoing hepatectomy (1/2019-2/2022) were collected from a prospectively maintained database and 1:1 propensity score matched for 61 robotic and 61 open hepatectomy patients by complexity, tumor diagnosis, and age >65. Financial data was collected and converted to a ratio of service cost to average OR cost. Short-term and economic outcomes were compared.

Results: Median length of stay (2 vs. 3 days), major complication rates (0% vs. 8.2%), and 90-day readmission rates (3.3% vs. 11.5%) were lower for robotic hepatectomy (all p < 0.05). Total 90-day perioperative costs were lower by 19.5% for the robotic cohort (mean 6.89 vs 8.56; p < 0.01). Intraoperative costs were higher in the robotic cohort (mean 2.75 vs. 2.44; p < 0.01). Cost reduction drivers during postoperative care were supplies (mean 0.26 vs. 0.75), laboratory (mean 0.27 vs. 0.49), regular surgery unit (mean 0.19 vs. 0.32), recovery room (mean 0.26 vs. 0.29) and pharmacy cost (median 0.21 vs. 0.32; all p < 0.05).

Conclusion: Hospital costs of robotic hepatectomy were lower than those of open hepatectomy due to significantly reduced postoperative costs.