The assessment of household wealth in health studies in developing countries: a comparison of participatory wealth ranking and survey techniques from rural South Africa
Health researchers often wish to study the impact of wealth on health outcomes. To do this they must collect data on social and economic factors. However, the collection of detailed data on income and expenditure is rare in health studies in developing countries. Instead, researchers generally adopt more rapid procedures based on survey methodology. Increasingly this has included the use of Principal Components Analysis (PCA) to generate a number of separate indicators of welfare. An alternative approach is to utilise participatory wealth ranking to generate a measure of household wealth.