Longitudinal community studies in Africa: Challenges and contributions to health research

Reliable and timely information is a central pillar of well-functioning health systems. In fact, much of the progress in improving human health is “due to technical progress, including advances in knowledge about diseases and about appropriate, cost-effective responses” (Jamison and others, 2006; p. 155). Developing health technology requires sound research and the precise information that is needed for gauging the efficacy of interventions. Moreover, comprehensive sociodemographic and health information is needed to guide policy deliberations. The need for such information is particularly acute in developing countries because policy that lacks empirical grounding can be more damaging to public welfare in such settings than is the case in relatively prosperous countries where the public enjoys multiple service options and individuals have resources for financing personal choices.