A new indicator, Poverty-Free Lifespan Inequality, is proposed to capture heterogeneity in the distribution of poverty-free years across the population, going beyond the average measure of Poverty-Free Life Expectancy, using Sullivan-type methods and the Gini index applied to age-specific poverty prevalence data across Europe.
Key Findings
Background
Poverty-Free Life Expectancy alone fails to capture disparities in the distribution of poverty-free years across individuals.
Poverty-Free Life Expectancy measures only the average number of years individuals are expected to live above the poverty threshold.
The indicator does not account for heterogeneity in economic well-being over the life course.
The authors argue this gap motivates the need for a complementary distributional measure.
Methods
The paper formally introduces Poverty-Free Lifespan Inequality as a new indicator inspired by developments in Healthy Lifespan Inequality measurement.
The indicator is conceptually analogous to Healthy Lifespan Inequality, extended to the economic domain.
The paper provides a formal mathematical definition and elaborates its foundations.
Policy relevance of the new indicator is explicitly discussed.
Methods
Poverty-Free Lifespan Inequality is computed using Sullivan-type methods combined with the Gini index applied to the distribution of exit from poverty-free life.
Age-specific poverty prevalence data are used as inputs.
Sullivan-type methods are used to derive the distribution of exit from poverty-free life.
Inequality within that distribution is quantified using the Gini index.
The approach is applied to European country-level data.
Results
Poverty-Free Lifespan Inequality provides critical insights into the heterogeneity of economic well-being over the life course across European countries.
The indicator reveals distributional differences that are not captured by average Poverty-Free Life Expectancy alone.
Cross-country variation in inequality of poverty-free lifespan is demonstrated using the new measure.
The authors conclude the indicator has direct policy relevance for monitoring economic inequalities in aging populations.
Nigri A. (2026). Measuring economic lifespan inequality: a new indicator of poverty-free lifespan across Europe.. Population health metrics. https://doi.org/10.1186/s12963-026-00461-w