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Table 2 Concentration index of determinants

From: Who benefits most from influenza vaccination policy: a study among the elderly in Beijing, China

Variables CIk 95 % CI
Age (years) 0.008 0.005 0.010
Gender −0.013 −0.022 −0.005
Place of residence −0.0003 −0.010 0.009
Per capita household income (CNY) 0.139 0.126 0.152
Education    
 ≤ Primary school −0.059 −0.100 −0.018
 Junior high school −0.122 −0.164 −0.081
 Secondary school 0.069 0.016 0.123
 Beyond secondary school 0.256 0.197 0.314