The disability-adjusted life year (DALY) is a measure of aggregate ill-health whose construction depends on a counterfactual – the number of life-years a person could have expected to live had she or he not died. There are two ways of specifying the DALY counterfactual to estimate years of...

This chapter investigates recent advances in our understanding of the global distribution of income, and produces the first estimates of global inequality that take into account data on the incomes of the top one percent within countries. We discuss conceptual and methodological issues –...

The authors investigate the methodology used in projections of international poverty - particularly those used in many World Bank documents. The methodology, as developed by Ahluwalia, Carter, and Chenery (1979) in an influential paper, is examined critically and subjected to sensitivity...

The international community's commitment to halve global poverty by 2015 has been enshrined in the first Millennium Development Goal. How global poverty is measured is a critical element in assessing progress towards this goal, and different researchers have presented widely-varying estimates....

It is widely recognized that health is influenced by a variety of social, economic and environmental factors, and not just by access to health care. The extensive empirical literature on the social determinants of-- and inequalities in-- health has yet to be matched by an appreciation of the...

In the last fifty years, average overall health status has increased more or less in parallel with a much celebrated decline in mortality, attributed mostly to poverty reduction, sanitation, nutrition, housing, immunization, and improved medical care. It is becoming increasingly clear, however,...