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Table 3 Concentration index values for conservative and non conservative surgery

From: Income level and regional policies, underlying factors associated with unwarranted variations in conservative breast cancer surgery in Spain

Age-groups Concentration Index ranked by income (CI95%) Concentration Index ranked by educational level (CI95%)
All years CS 0.12 (0.09 to 0.14) ‡ 0.05 (0.01 to 0.09) ‡
All years NCS -0.03 (-0.05 to -0.007) ‡ -0.02 (-0.04 to 0.001)
< 50 years CS 0.10 (0.07 to 0.14) ‡ 0.04 (0.01 to 0.08) ‡
< 50 years NCS -0.02 (-0.05 to -0.002) ‡ -0.01 (-0.03 to 0.01)
50-70 years CS 0.12 (0.09 to 0.15) ‡ 0.05 (0.01 to 0.10) ‡
50-70 years NCS -0.04 (-0.06 to -0.01) ‡ -0.02 (-0.05 to 0.01)
> 70 years CS 0.13 (0.09 to 0.17) ‡ 0.04 (-0.02 to 0.11)
> 70 years NCS -0.02 (-0.04 to 0.006) -0.02 (-0.05 to 0.007)
  1. CS: Conservative Surgery; NCS: Non-conservative surgery. CI95%: Concentration index confidence interval assuming a type I error of 5%. ‡ Statistical significance