queuing characterizes patterns in namibia and uganda although at different levels of overall u m while cambodia s pattern is mixed showing that richer groups enjoy lower mortality rates but the rates among poorer groups are not as extremely high as those observed in niger socioeconomic inequality in malnutrition in developing countries bulletin of the world health organization vol what about the trends in health inequalities over time trend analysis requires at least two different data points and only a handful of developing countries have conducted health surveys whose results are comparable at two or more different points in time