Interpretation: without financial aid, 20% of individuals in the €600-700 income group take out a private supplementary health cover costing €50 a month . When the financial aid reaches 80% of the insurance premium, 80% individuals from the same income group take out the supplementary health cover .
Data: 2004 Health, Health Care And Insurance Survey (ESPS) – Permanent sample of socially insured individuals (Epas).
Adapted from the Questions d'économie de la Santé Irdes n° 153 "What Would be the Optimal Subsidy to Encourage Subscription to Supplementary Health Insurance?"