Longitudinal cohort analyses based on the INDEPTH network of demographic and health surveillance sites (www.indepth-network.org) show an association between socio-economic status and under-five mortality (Mwageni and others, 2011), but this association does not hold when other factors are taken into consideration (Debpuur and others, 2011). The country data are from the most recent DHS surveys conducted in 2005-2013 and are weighted by the 2005 population size of each ofthe 50 countries in a multivariate regression. Figure 9 presents the measured effect of household wealth on child mortality (ages 0-4 years or 0-59 months) for the three regions included in the analysis. The net relative risk of dying before reaching the fifth birthday for a child born in Africa from the richest household is 89 per cent that for a child from the poorest household in the region. In contrast, the net relative risk of dying of a child born in Asia from the richest household is only 52 per cent that for a child from the poorest household.