Results from this study of the extent and implications of attrition for three longitudinal household surveys from Bolivia, Kenya, and South Africa suggest that multivariate estimates of behavioral relations may not be biased because of high attrition. This suggests that demographers and other...

Using panel data for Peru for 1994-2000, Chong, Hentschel, and Saavedra find that when households receive two or more services jointly, the welfare increases, as measured by changes in consumption, are larger than when services are provided separately. The increases appear to be more than...

Using panel data for Peru for 1994-2000, the authors find that when households receive two, or more services jointly, the welfare increases as measured by changes in consumption are larger than when services are provided separately. The increases appear to be more than proportional, as F-tests...