PMID- 35790981 OWN - NLM STAT- MEDLINE DCOM- 20220707 LR - 20220716 IS - 1472-6963 (Electronic) IS - 1472-6963 (Linking) VI - 22 IP - 1 DP - 2022 Jul 5 TI - Effects of fee-for-service, diagnosis-related-group, and mixed payment systems on physicians' medical service behavior: experimental evidence. PG - 870 LID - 10.1186/s12913-022-08218-5 [doi] LID - 870 AB - BACKGROUND: Healthcare reforms in many countries have shown a movement from pure payment systems to mixed payment systems. However, there remains an insufficient understanding of how to design better mixed payment systems and how such systems, especially Diagnosis-Related-Group (DRG)-based systems, benefit patients. We therefore designed a controlled laboratory experiment to investigate the effects of fee-for-service (FFS), DRG, and mixed payment systems on physicians' service provision. METHODS: A total of 210 medical students were recruited from Capital Medical University as subjects. They, in the role of physicians, were randomly divided into seven groups and chose the quantity of medical services for different patient types under pure FFS, pure DRG, or mixed payment schemes that included two FFS-based mixed payment schemes and three DRG-based mixed payment schemes. There were five rounds of each group of experiments, and each subject made 18 decisions per round. The quantity of medical services provided by subjects were collected. And relevant statistics were computed and analyzed by nonparametric tests and random effects model. RESULTS: The results showed that the physicians' overprovision (underprovision) of services under FFS (DRG) schemes decreased under mixed payment schemes, resulting in higher benefit to patients under mixed payment schemes. Patients' health conditions also affected physicians' behavior but in different directions. Higher disease severity was associated with higher deviation of physicians' quantity choices from the optimal quantity under DRG and DRG-based mixed payment schemes, while the opposite was found for FFS and FFS-based mixed payment schemes. CONCLUSIONS: Mixed payment systems are a better way to balance physicians' profit and patients' benefit. The design of mixed payment systems should be adjusted according to the patient's health conditions. When patients are in lower disease severity and resource consumption is relatively small, prospective payments or mixed systems based on prospective payments are more suitable. While for patients in higher disease severity, retrospective payments or mixed systems based predominantly on retrospective payments are better. CI - (c) 2022. The Author(s). FAU - Li, Xing AU - Li X AD - School of Public Health, Capital Medical University, No.10 Xitoutiao, Youanmenwai Street, Fengtai District, Beijing, 100069, China. FAU - Zhang, Yue AU - Zhang Y AD - School of Public Health, Capital Medical University, No.10 Xitoutiao, Youanmenwai Street, Fengtai District, Beijing, 100069, China. FAU - Zhang, Xinyuan AU - Zhang X AD - School of Public Health, Capital Medical University, No.10 Xitoutiao, Youanmenwai Street, Fengtai District, Beijing, 100069, China. FAU - Li, Xinyan AU - Li X AD - School of Public Health, Capital Medical University, No.10 Xitoutiao, Youanmenwai Street, Fengtai District, Beijing, 100069, China. FAU - Lin, Xing AU - Lin X AD - School of Public Health, Capital Medical University, No.10 Xitoutiao, Youanmenwai Street, Fengtai District, Beijing, 100069, China. FAU - Han, Youli AU - Han Y AD - School of Public Health, Capital Medical University, No.10 Xitoutiao, Youanmenwai Street, Fengtai District, Beijing, 100069, China. hanyouli@ccmu.edu.cn. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20220705 PL - England TA - BMC Health Serv Res JT - BMC health services research JID - 101088677 SB - IM MH - Diagnosis-Related Groups MH - *Fee-for-Service Plans MH - Health Care Reform MH - Humans MH - *Physicians MH - Retrospective Studies PMC - PMC9258053 OTO - NOTNLM OT - Experimental economics OT - Mixed payment OT - Physicians' behavior COIS- None declared. EDAT- 2022/07/06 06:00 MHDA- 2022/07/08 06:00 PMCR- 2022/07/05 CRDT- 2022/07/05 23:33 PHST- 2022/01/16 00:00 [received] PHST- 2022/06/14 00:00 [accepted] PHST- 2022/07/05 23:33 [entrez] PHST- 2022/07/06 06:00 [pubmed] PHST- 2022/07/08 06:00 [medline] PHST- 2022/07/05 00:00 [pmc-release] AID - 10.1186/s12913-022-08218-5 [pii] AID - 8218 [pii] AID - 10.1186/s12913-022-08218-5 [doi] PST - epublish SO - BMC Health Serv Res. 2022 Jul 5;22(1):870. doi: 10.1186/s12913-022-08218-5.