Different impacts of the zero-markup drug policy on county general and traditional Chinese medicine hospitals: evidence from Shandong province, China

Table 4 Parallel trend test assuming the reform happened 2 or 3 years ahead

	Ln share of revenue from medicine sales	Ln revenue from medicine sales	Ln revenue from medical care service	Ln government subsidies	Ln revenue and expenditure surplus	Ln gross revenue	Ln number of annual outpatient visits	Ln number of annual inpatient visits
Pseudo-reform A (Assumed 2 years ahead)	0.014 (0.016)	0.001 (0.031)	−0.019 (0.016)	−0.180 (0.159)	−0.081 (0.082)	− 0.035 (0.021)	0.012 (0.031)	− 0.017 (0.035)
Observations	1967	1967	1967	1912	1966	1967	1967	1965
R-squared	0.518	0.771	0.912	0.338	0.009	0.893	0.584	0.594
Pseudo-reform B (Assumed 3 years ahead)	0.032 (0.012)*	0.049 (0.025)*	−0.000 (0.024)	−0.360 (0.169)*	0.015 (0.010)	−0.009 (0.021)	0.020 (0.029)	0.005 (0.034)
Observations	1967	1967	1967	1912	1966	1967	1967	1965
R-squared	0.520	0.771	0.912	0.340	0.005	0.893	0.584	0.593

All models adjusted for individual fixed effects, yearly fixed effects, medical staffs and hospital beds. Standard errors in parentheses
*** p < 0.001, ** p < 0.01, * p < 0.05

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