A comparative study of hospitalization costs of TKA inpatients before and after National Volume-based Procurement in Guangdong, China: an interrupted time-series analysis

The volume-based procurement policy in Guangdong, China has shown initial effectiveness. After it was implemented, total expenses, consumables costs, and self-financed expenses decreased. The structure of hospitalization costs also reflects the slight improvement in healthcare providers' value and treatment planning decisions. Further attention should be given to the healthcare professionals' labor value. The empirical analysis results provide a reference for the government further to improve the volume-based procurement for artificial joints.