%0 Journal Article %T THE ESTIMATION OF CAUSAL EFFECTS FROM OBSERVATIONAL DATA %A Christopher Winship and %A Stephen L. Morgan %J - %D 1999 %R 10.1146/annurev.soc.25.1.659 %X £¿ Abstract£¿When experimental designs are infeasible, researchers must resort to the use of observational data from surveys, censuses, and administrative records. Because assignment to the independe.. %U https://www.annualreviews.org/doi/abs/10.1146/annurev.soc.25.1.659