International Household Survey Network
Catalog of household surveys in countries around the world. This site does not contain the data in the surveys, but should provide enough information to track the survey back to its source.
Human Development Reports - United Nations
Includes statistics and indices to measure development in economic and cultural terms.
Health Nutrition and Population Statistics
HealthStats provides key health, nutrition and population statistics gathered from a variety of international sources. Themes include population dynamics, nutrition, reproductive health, health financing, medical resources and usage, immunization, infectious diseases, HIV/AIDS, DALY, population projections and lending.
OECD Health Data: Organisation for Economic Cooperation and Development
Examines national health systems from 1960 forward for OECD member countries in a general, demographic, economic, and social context.