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Table 2 The parameters of the interrupted time series analysis for NCDs outpatients (outpatient volume and average drug cost as the dependent variables respectively)

From: Impact of China’s zero mark-up drug policy on drug cost of NCDs’ outpatients: an interrupted time series analysis

Indicator β0 β1 β2 β3
Estimated value P-value Estimated value P-value Estimated value P-value Estimated value P-value
Outpatient volume (person-month) Diabetes 3692.00 < 0.001 13.63 0.056 226.24 0.302 −53.04 0.012
Hypertension 3211.00 < 0.001 −6.05 0.084 151.17 0.081 −142.19 < 0.001
Coronary heart disease 413.38 < 0.001 3.45 0.001 −22.92 0.302 −12.16 < 0.001
Average drug cost per month (RMB) Diabetes 761.80 < 0.001 0.16 0.835 −45.51 0.029 −4.44 0.029
Hypertension 605.09 < 0.001 0.53 0.315 −19.79 0.276 −5.87 < 0.001
Coronary heart disease 780.21 < 0.001 2.26 0.257 −77.46 0.047 −10.23 0.036