This file was originally prepared by Anders Corr (corr@fas.harvard.edu) who reports on December 8, 2007 that the resulting numbers closely match with those reported in the published article. It was later modified by Jason Bryer (jason@bryer.org) to an R data object to be included in this package. See http://imai.princeton.edu/research/pscore.html for more information
a data frame with 9,708 observations of 12 variables.
National Center For Health Services Research, 1987. National Medical Expenditure Survey. Methods II. Questionnaires and data collection methods for the household survey and the Survey of American Indians and Alaska Natives. National Center for Health Services Research and Health Technology Assessment.
Imai, K., & van Dyk, D.A. (2004). Causal Inference With General Treatment Regimes: Generalizing the Propensity Score, Journal of the American Statistical Association, 99(467), pp. 854-866.
Elizabeth Johnson, E., Dominici, F., Griswold, M., & Zeger, S.L. (2003). Disease cases and their medical costs attributable to smoking: An analysis of the national medical expenditure survey. Journal of Econometrics, 112.