WKSMIRNOV: Stata module to perform a weighted two-sample Kolmogorov-Smirnov equality-of-distributions test

Ariel Linden

Statistical Software Components from Boston College Department of Economics

Abstract: wksmirnov computes a weighted two-sample Kolmogorov-Smirnov test of the equality of distributions. This is the balance diagnostic used by the R package twang (Toolkit for Weighting and Analysis of Nonequivalent Groups) to assess whether propensity-score weighting has equalized the distribution of a covariate between a treatment group and a comparison group, and to drive its generalized boosted regression stopping rules. When weights are not specified, wksmirnov produces the same results as ksmirnov.

Language: Stata
Requires: Stata version 14
Keywords: Kolmogorov-Smirnov; equality-of-distributions; covariate balance (search for similar items in EconPapers)
Date: 2026-07-11
Note: This module should be installed from within Stata by typing "ssc install wksmirnov". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
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http://fmwww.bc.edu/repec/bocode/w/wksmirnov.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/w/wksmirnov.sthlp help file (text/plain)

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