Longitudinal research designs and utility in the Asian and Pacific region

Longitudinal studies in the Asian and Pacific region show a wide diversity of research designs and modes of utilization. In drawing on these experiences, the article discusses the relative advantages of different approaches and the multiple ways in which they have contributed to building demographic and health knowledge and to shaping related policies, interventions and services, thus contributing to the welfare of people in the region. Because of this theoretical and applied relevance, the authors conclude that the undertaking of longitudinal research should be encouraged, notwithstanding the challenges posed by their complex, labour-intensive and expensive nature, and the extra precautions needed to address ethical concerns.