Many developing countries are trying to improve the routine collection of health information by strengthening surveys, censuses, and registration systems. At the international level, too, efforts are underway to provide information on health and health interventions, including statistical...

In most developing countries, data collection methods in the civil registration system and health services are woefully inadequate and methods for adjusting them apply only at the national level. The authors argue that the best way to collect data on adult mortality is probably to combine sample...