Identifiability, exchangeability and confounding revisited.
In 1986 the International Journal of Epidemiology published "Identifiability, Exchangeability and Epidemiological Confounding". We review the article from the perspective of a quarter century after it was first drafted and relate it to subsequent developments on confounding, ignorability, and collapsibility.
Greenland
Sander
S
Department of Epidemiology and Department of Statistics, University of California, Los Angeles, CA 90095-1772, USA. lesdomes@ucla.edu
Robins
James M
JM