Table 6.

Concentration index of hospitalization expenses for patients in secondary hospitals.

Year	CI	P	CAD	P
Before the DIP reform
2020	−0.1516358	<0.001	−0.12426722	<0.001
After the DIP reform
2021	−0.12334739	<0.001	−0.11207911	<0.001
2022	−0.11014197	<0.001	−0.08209652	<0.001
2023	−0.13251721	<0.001	−0.08636472	<0.001