Analysis of the effect of serious illness medical insurance on relieving the economic burden of rural residents in China: a case study in Jinzhai County

Table 1 Basic information of variables

Variable	Variable definition	C ≤ 2828 (n = 5984)		C > 2828 (n = 1370)
Variable	Variable definition	Mean	SD	Mean	SD
Dependent variable (%)
AMIPP	Proportion of total medical insurance payment to total medical expenses	48.16	13.52	51.93	11.47
IMIPP	Proportion of total medical insurance payment to total inside medical insurance expenses	59.48	13.19	61.39	11.93
IMISPP	Proportion of inside medical insurance self-payment to total expenses	32.69	11.96	32.81	11.14
OMISPP	Proportion of outside medical insurance self-payment to total expenses	19.15	10.99	15.26	10.71
Independent variable (grouping variable)
Serious illness expenses	Total of ceiling self-payment, necessary clinical treatment cost, self-payment under NRCMS	1.38	0.27	2.41	0.28
Covariates
Age	Age of inpatients	49.82	18.39	50.45	17.15
Hospital stay	Length of hospital stay in days	23.26	29.38	26.46	36.34
Total expenses	Total annual inpatient medical expenses	4.78	2.42	7.49	3.27
Sex	Female = 1	0.58	0.49	0.57	0.49
Inpatient type	Inpatient grade (1–5)	4.06	1.06	4.24	1.16

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