The Application of Time-Driven Activity-Based Costing in Oncology: A Systematic Review.

Objectives: Time-driven activity-based costing (TD-ABC) holds promise to control costs and enhance value in oncology, but the current landscape of its applications remains uncharted. This study aimed to: (1) document the applications of TD-ABC in oncology and unveil its strengths and limitations, (2) assess the extent to which studies adhere to Kaplan and Porter's method, and (3) appraise study quality.

Methods: A systematic review was performed according to the Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines. To be eligible for inclusion, studies had to provide an empirical application of TD-ABC within oncology. Structured data extraction included key characteristics such as cancer type, perspective, and analysis setting. Quality was assessed using the TD-ABC Healthcare Consortium Consensus Statement checklist.

Results: A total of 59 studies met the inclusion criteria, two-thirds of which were published within the last 5 years. Most studies were conducted in high-income countries and analyzed common cancer types. The provider's perspective (85%) dominated, and studies typically relied on single-institution data (76%). No study assessed costs over a complete cycle of care and most focused on the costs of radiotherapy (56%) or surgery (20%). Articles generally did not adhere to the seven-step method, and average study quality was low (52%), particularly because of inadequate content in methods and results.

Conclusions: Oncology has emerged as a productive field for TD-ABC analyses, showcasing the effectiveness of TD-ABC in capturing the costs of healthcare processes in which medical devices are integral to care delivery. Nevertheless, concerns arise because of the low overall study quality and the lack of a consistent methodology.