The Effects of County Public Hospital Reform on the Consumption and Costs of Antibiotics: Evidence from a Quasinatural Experiment in Jiangsu, China

Table 4

Results of modified Park tests and Box–Cox tests to identify family distribution and link function of outcome indicators.

Outcomes	Modified Park test	Family distribution	Box–Cox test	Link function
Average volume (DDDs/1000) of procured antibiotics per hospital per month
Total antibiotics	2.15	Gamma	0.32	Square root
Nonrestricted	2.61	Gamma	0.28	Square root
Restricted	1.29	Poisson	0.30	Square root
Controlled	2.06	Gamma	0.15	Log
Oral	1.76	Gamma	0.25	Log
Injectable	2.79	Gamma	0.35	Square root
Average costs (ten thousand RMB) of procured antibiotics per hospital per month
Total antibiotics	2.05	Gamma	0.31	Square root
Nonrestricted	1.03	Poisson	0.30	Square root
Restricted	2.22	Gamma	0.27	Square root
Controlled	2.08	Gamma	0.14	Log
Oral	0.91	Poisson	0.24	Log
Injectable	2.11	Gamma	0.31	Square root
Average costs per DDD (RMB) of procured antibiotics per hospital per month
Total antibiotics	1.31	Poisson	0.61	Square root
Nonrestricted	0.28	Gaussian	0.20	Log
Restricted	0.32	Gaussian	0.70	Square root
Controlled	0.76	Poisson	0.55	Square root
Oral	2.92	Gamma	0.04	Log
Injectable	1.68	Gamma	0.50	Square root

Note. ; ;