Abstract:
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.
JEL-codes:C13C51 (search for similar items in EconPapers) New Economics Papers: this item is included in nep-ecm Date: 2009-07 Note: TWP View list of references
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