Table 2

Correlation of the relative index of inequality (RII) with GDP and Gini-index, and results of cross-level interaction analysis in multilevel models

Country-level indicator	RII		Spearman’s correlation		Cross-level interaction
	Socioeconomic indicator	Functional outcome	Coeff.	P value	Random intercept model		Random slope model
	Socioeconomic indicator	Functional outcome	Coeff.	P value	Coeff.	P value	Coeff.	Pvalue
Gini-index	Education	Cognitive function	−0.31	0.065	−0.92	<0.001	−0.98	0.006
	Education	Physical function	−0.62	<0.001	−0.87	<0.001	−0.95	0.004
	Income	Cognitive function	−0.23	0.202	−0.27	<0.001	−0.31	0.057
	Income	Physical function	−0.41	0.020	−0.40	<0.001	−0.38	0.097
GDP	Education	Cognitive function	0.12	0.463	2.9×10^-6	<0.001	2.9×10^-6	0.158
	Education	Physical function	0.67	<0.001	3.3×10^-6	<0.001	4.3×10^-6	0.031
	Income	Cognitive function	0.23	0.210	2.2×10^-7	0.463	1.5×10^-6	0.100
	Income	Physical function	0.49	0.005	1.7×10^-6	<0.001	2.5×10^-6	0.044