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

Table 3 The parameters of the interrupted time series analysis for NCDs outpatients of different sexes, ages and basic medical insurance (average drug cost as the dependent variable)

Indicator		β0		β1		β2		β3
Indicator		Estimated value	P-value	Estimated value	P-value	Estimated value	P-value	Estimated value	P-value
Sex
Male	Diabetes	740.74	< 0.001	0.33	0.679	−51.21	0.017	−3.62	0.078
	Hypertension	600.16	< 0.001	1.54	0.097	−48.26	0.047	−7.78	0.001
	Coronary heart disease	833.00	< 0.001	0.47	0.712	−9.12	0.797	−11.58	0.001
Female	Diabetes	791.45	< 0.001	−0.30	0.547	−41.24	0.011	− 4.78	0.001
	Hypertension	610.14	< 0.001	−0.24	0.599	−2.97	0.855	−4.40	0.002
	Coronary heart disease	729.16	< 0.001	1.43	0.191	27.96	0.412	−12.51	< 0.001
Age
0–45	Diabetes	507.08	< 0.001	1.11	0.005	−13.96	0.246	1.85	0.064
	Hypertension	353.70	< 0.001	−0.21	0.734	22.70	0.255	−3.66	0.030
	Coronary heart disease	541.37	< 0.001	3.01	0.210	−28.93	0.729	−9.22	0.163
46–65	Diabetes	720.53	< 0.001	0.33	0.336	−54.40	< 0.001	−3.16	0.001
	Hypertension	555.77	< 0.001	0.06	0.883	−20.16	0.158	−4.54	< 0.001
	Coronary heart disease	781.70	< 0.001	0.76	0.544	7.06	0.849	−11.70	< 0.001
> 65	Diabetes	874.52	< 0.001	−0.52	0.709	−55.50	0.094	−6.15	0.088
	Hypertension	689.67	< 0.001	1.16	0.306	−43.06	0.129	−8.32	0.005
	Coronary heart disease	802.53	< 0.001	2.28	0.331	−102.61	0.030	−8.91	0.117
Basic medical insurance
BMIUE	Diabetes	800.24	< 0.001	−0.19	0.822	−53.37	0.017	−4.24	0.054
	Hypertension	623.11	< 0.001	1.02	0.170	−59.63	0.010	−5.60	0.021
	Coronary heart disease	818.94	< 0.001	1.49	0.338	−63.06	0.117	−10.02	0.010
BMIUR	Diabetes	381.93	< 0.001	1.10	0.006	−49.01	0.001	0.01	0.993
	Hypertension	281.34	< 0.001	0.69	0.349	10.71	0.682	−3.53	0.108
	Coronary heart disease	573.32	< 0.001	−0.54	0.808	−42.62	0.539	−1.27	0.822

Abbreviations: BMIUE basic medical insurance for urban employees, BMIUR basic medical insurance for urban residents