Propensity Score Matching Diagram

Researchers first estimate a propensity score for each student or other unit in the sample rosenbaum and rubin 1983.

Propensity score matching diagram.

Propensity score matching is a statistical matching technique that attempts to estimate the effect of a treatment e g intervention by accounting for the factors that predict whether an individual would be eligble for receiving the treatment the wikipedia page provides a good example setting. Simple and clear introduction to psa with worked example from social epidemiology. Jm oakes and js kaufman jossey bass san francisco ca. Propensity scores are usually computed using logistic regression with group treatment status regressed on observed baseline characteristics including age gender and behaviors of relevance to the research.

The score is a predicted probability that students receive a treatment given their observed characteristics. Hirano k and imbens gw. Propensity score matching for social epidemiology in methods in social epidemiology eds. Psm attempts to reduce the bias due to confounding variables that could be found in an estimate of the treatment effect.

The propensity score with continuous treatments in applied bayesian modeling and. Logistical regression isn t. As discussed in my previous blog post propensity score matching is a powerful technique for reducing a set of confounding variables to a single propensity score so an analyst can easily eliminate all confounding bias in that post i described a scenario in which a marketer may struggle to identify the causal effect of a particular campaign and discussed a rigorous causal inference technique. Say we are interested in the effects of smoking on health.

An alternative method of controlling for observed variables is propensity score matching.