RANDOMIZE: Stata module to create random assignments for experimental trials, including blocking, balance checking, and automated rerandomization

Chris Kennedy and Christopher B. Mann
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Christopher B. Mann: Skidmore College

Statistical Software Components from Boston College Department of Economics

Abstract: randomize conducts random assignment of units to equally sized groups. It can check for balance on a specified list of covariates. If blocking variables are specified it will conduct the randomization within blocks. It can rerandomize within blocks a certain number of times, such as conducting 100 randomizations and choosing the randomization with the best balance across covariates. It can also rerandomize until the balance statistic (Wilks' lambda on a manova) exceeds a certain cut-off value (e.g. 0.2). If unequal allocation sizes are desired, multiple groups can be aggregated after the randomization. Assignments are allocated in a random order within each block, ensuring that group sizes differ by no more than one observation in each block.

Language: Stata
Requires: Stata version 12
Keywords: data management; randomization; experimental trials; covariate balance (search for similar items in EconPapers)
Date: 2015-06-17, Revised 2017-06-01
Note: This module should be installed from within Stata by typing "ssc install randomize". 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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Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/r/randomize.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/r/randomize.sthlp help file (text/plain)

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Persistent link: https://EconPapers.repec.org/RePEc:boc:bocode:s458028

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