Step-by-Step Propensity Score Matching Tutorial in Python

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In the statistical analysis of observational data, propensity score matching (PSM) is a statistical matching technique that attempts to estimate the effect of a treatment, policy, or other intervention by accounting for the covariates that predict receiving the treatment.
PSM attempts to reduce the bias due to confounding variables that could be found in an estimate of the treatment effect obtained from simply comparing outcomes among units that received the treatment versus those that did not. Paul R. Rosenbaum and Donald Rubin introduced the technique in 1983.
The possibility of bias arises because a difference in the treatment outcome (such as the average treatment effect) between treated and untreated groups may be caused by a factor that predicts treatment rather than the treatment itself. In randomized experiments, the randomization enables unbiased estimation of treatment effects; for each covariate, randomization implies that treatment-groups will be balanced on average, by the law of large numbers.
Unfortunately, for observational studies, the assignment of treatments to research subjects is typically not random. Matching attempts to reduce the treatment assignment bias, and mimic randomization, by creating a sample of units that received the treatment that is comparable on all observed covariates to a sample of units that did not receive the treatment.

[@DataHeroes]

Download the Propensity Score Matching Python script: data-heroes-2.ck.page/psm_python

[@CMRbuzz7]

Great video, thank you! Very concise and clear

[@junqichen6241]

Hi, now that you have created the model, how do you balance the treatment and control group?

[@md.anamulislam2702]

Hi Folks, Can anyone please help to show the best way to interpret the results of propensity matching?

[@therespiratorydoctor6801]

Thank you. Very lucid

[@DataHeroes]

Thanks :)

[@Kftlsjanvr]

thank you for this

[@AbhiPatel-ej9tj]

Thank you so much for this explanation. Can I get your E-mail? I want to concern you about my Master Thesis which is based on your this video. Can you help me with that?