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Propensity Score Matching — Fairer Before/After Comparisons In Minutes

Upload your data and get a complete propensity score matching — fairer before/after comparisons report. Free.

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Free analyses run on up to 10,000 rows. Larger files are randomly sampled to that size — sign up to analyze your full dataset.

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Running propensity score matching — fairer before/after comparisons analysis...

Running propensity score matching — fairer before/after comparisons analysis...

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What's in the report?

Standard-library analysis: compare a treated group against an untreated group fairly when assignment wasn't random. Did loyalty members spend more BECAUSE of the program, or were they already better customers? The analysis models each row's propensity to be treated from the covariates you map, matches every treated row to its nearest comparable control (1-nearest-neighbor on the logit propensity score, 0.2-SD caliper, without replacement), and shows the naive raw difference next to the matched difference with confidence intervals — plus covariate balance before and after matching. Matching adjusts only for observed covariates.

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Covariate Balance

Interactive table visualization

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Balance After Matching

Interactive horizontal_bar visualization

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Naive vs Matched Difference

Interactive bar visualization

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Effect Estimates

Interactive table visualization

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AI Insights

Plain-English interpretation — what the numbers mean, what's significant, and what to do next.

The Question This Answers

Did loyalty-program members spend more because of the program, or were they already better customers?

Questions?

See our FAQ for details on pricing, data privacy, and how the analysis works. Every report includes a Methodology section showing the statistical test, assumptions checked, and diagnostics run.

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