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Wagner TH. Econometrics Course: Propensity Scores. [Cyberseminar]. 2012 Jul 25.
Understanding causation with observational data is often more dependent on what we don't observe than what we do observe. Multivariate techniques can be very useful for understanding observed characteristics. Propensity scores have emerged over the past 20 as another way to control for observables. We describe the concepts behind propensity scores and how they have been used (and misused) in practice. Finally, we work through an example using propensity scores.
