Use of Traditional Chinese Medicine and Its Impact on Medical Cost among Urban Ischemic Stroke Inpatients in China: A National Cross-Sectional Study

Table 3

Multiple regression analysis for total inpatient costs.

Parameters		Coef.	> z	95% Wald confidence interval
				Lower	Upper
Use of TCM	TCM users	0.325	<0.001	0.304	0.347
Length of stay		0.756	<0.001	0.748	0.764
Age		0.002	<0.001	0.002	0.003
Sex	Male	0.026	<0.001	0.015	0.037
Insurance type	UEBMI	0.109	<0.001	0.097	0.121
Hospital type	Tertiary hospital	1.001	<0.001	0.984	1.018
	Secondary hospital	0.535	<0.001	0.520	0.550
Admission to TCM hospitals		−0.006	0.458	−0.022	0.010
Region	East	0.217	<0.001	0.201	0.234
	Central	−0.108	<0.001	−0.124	−0.093
Hypertension		0.054	0.001	0.023	0.085
Coronary heart disease		0.054	0.005	0.016	0.092
Diabetes		0.114	<0.001	0.068	0.159
Chronic pulmonary disease		0.364	<0.001	0.301	0.427
Peripheral vascular disease		0.080	0.091	−0.013	0.172
Other neurological diseases		−0.014	0.781	−0.110	0.083
Rheumatoid arthritis		0.034	0.600	−0.092	0.160
Peptic ulcer disease		0.112	0.096	−0.020	0.244
_Cons		5.959	<0.001	5.912	6.006

R-square = 0.5780 and adjusted R-square = 0.5779 in a multiple linear regression model that was adjusted for length of stay, age, sex, insurance type, hospital type, region, hypertension, coronary heart disease, diabetes, chronic pulmonary disease, peripheral vascular disease, other neurological diseases, rheumatoid arthritis, and peptic ulcer disease. The baseline represents the inpatient cost for a female who did not use any TCM with Urban Resident Basic Medical Insurance admitted to a primary hospital and non-TCM hospital in the western region without the above-observed comorbidities. TCM: traditional Chinese medicine; UEBMI: Urban Employee Basic Medical Insurance scheme; URBMI: Urban Resident Basic Medical Insurance scheme.