In a recent series of papers, Murray et at. have put forward a number of im
portant ideas regarding the measurement of inequalities in health. In this
paper we agree with some of these ideas but draw attention to one key aspec
t of their approach - measuring inequalities on the basis of small area dat
a - which is flawed. A numerical example is presented to illustrate the pro
blem. An alternative approach drawing on longitudinal data is outlined, whi
ch preserves and enhances the most desirable aspects of their proposal. The
se include the use of a life course perspective, and the consideration of n
on-fatal health outcomes as well as the more usual information on mortality
patterns.