From: Impacts of the zero mark-up drug policy on hospitalization expenses of COPD inpatients in Sichuan province, western China: an interrupted time series analysis
coefficients
robust std. error
t
sig
95% Conf. Interval
β1
−14.93
3.46
− 4.32
0.000
− 21.92152
−7.92853
β2
197.75
73.99
2.67
0.011
47.97305
347.5245
β3
−4.25
6.35
−0.67
0.507
−17.1051
8.596238
β0
2811.98
49.38
56.94
2712.011
2911.952