Table 3. Changes in health expenditure based on difference-in-differences within the event-study framework.

Year	Total logarithm of health expenditures (95% CIa)	P value	Inpatient logarithm of health expenditures (95% CI)	P value	Outpatient logarithm of health expenditures (95% CI)	P value
2017	0.0055 (−0.002 to 0.013)	.15	0.003 (−0.005 to 0.01)	.48	0.008 (−0.003 to 0.018)	.14
2018	0.003 (−0.002 to 0.007)	.22	0.001 (−0.004 to 0.007)	.59	0.0029 (−0.003 to 0.009)	.37
2019	Reference	Reference	Reference	Reference	Reference	Reference
2020	−0.01 (−0.018 to -0.003)	.006	−0.011 (−0.019 to -0.003)	.005	−0.008 (−0.018 to 0.001)	.08
2021	−0.006 (−0.019 to 0.0075)	.40	−0.009 (−0.021 to 0.004)	.19	−0.002 (−0.017 to 0.0127)	.78
2022	−0.008 (−0.021 to 0.005)	.23	−0.009 (−0.02 to 0.003)	.14	−0.005 (−0.019 to 0.0097)	.51

^aCIs are based on the SEs that adjust for clustering at the prefecture level.