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 | |||
Coeff. | P value | Coeff. | Pvalue | |||||
Gini-index | Education | Cognitive function | −0.31 | 0.065 | −0.92 | <0.001 | −0.98 | 0.006 |
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 | |
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 |
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 | |
Physical function | 0.49 | 0.005 | 1.7×10-6 | <0.001 | 2.5×10-6 | 0.044 |