Study on the equity of medical services utilization for elderly enrolled in different basic social medical insurance systems in an underdeveloped city of Southwest China

Table 7 Binary logistic regression analyses for utilization of hospitalization services

System	Income grade	B	P	OR^a(95%CI)
UEBMI	I			1.000
	II vs I	0.443	0.011	1.557(1.105~ 2.195)
	III vs I	0.424	0.018	1.529(1.075~ 2.174)
	IV vs I	0.586	0.001	1.796(1.283~ 2.514)
	V vs I	0.613	0.001	1.846(1.292~ 2.636)
URBMI	I			1.000
	II vs I	0.634	0.043	1.885(1.021~ 3.480)
	III vs I	0.646	0.050	1.907(1.001~ 3.635)
	IV vs I	0.796	0.008	2.216(1.233~ 3.981)
	V vs I	0.468	0.179	1.597(0.807~ 3.163)
NCMS	I			1.000
	II vs I	0.194	0.046	1.215(1.003~ 1.470)
	III vs I	0.235	0.022	1.265(1.035~ 1.547)
	IV vs I	0.194	0.048	1.215(1.002~ 1.473)
	V vs I	0.245	0.018	1.278(1.042~ 1.566)

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