TY  - BOOK
AU  - Heckman,James J.
AU  - Todd,Petra E.
ED  - National Bureau of Economic Research.
TI  - A Note on Adapting Propensity Score Matching and Selection Models to Choice Based Samples
T2  - NBER working paper series
PY  - 2009///
CY  - Cambridge, Mass.
PB  - National Bureau of Economic Research
N1  - July 2009; Hardcopy version available to institutional subscribers
N2  - The probability of selection into treatment plays an important role in matching and selection models. However, this probability can often not be consistently estimated, because of choice-based sampling designs with unknown sampling weights. This note establishes that the selection and matching procedures can be implemented using propensity scores fit on choice-based samples with misspecified weights, because the odds ratio of the propensity score fit on the choice-based sample is monotonically related to the odds ratio of the true propensity scores
UR  - https://www.nber.org/papers/w15179
UR  - http://dx.doi.org/10.3386/w15179
ER  -