American Economic Review

ISSN 0002-8282 (Print) | ISSN 1944-7981 (Online)

Using Selection on Observed Variables to Assess Bias from Unobservables When Evaluating Swan-Ganz Catheterization

  • Joseph G. Altonji
  • Todd E. Elder
  • Christopher R. Taber
American Economic Review
vol. 98, no. 2, May 2008
(pp. 345–50)
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