LBPOWER: Stata module to calculate approximate power (or sample size) for longitudinal studies with binary response and two equally sized treatment groups
Amado David Quezada Sanchez ()
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Amado David Quezada Sanchez: National Institute of Public Health, Mexico
Statistical Software Components from Boston College Department of Economics
lbpower approximates power (or sample size) for longitudinal studies with a binary response and two treatment groups with equal size. It should be used if the log odds can be assumed linear, that is when response probabilities are in the range of 0.2 to 0.8. This formulation also assumes a constant correlation between repeated measurements. Note that this is just an approximation and should be applied with care.
Requires: Stata version 8
Keywords: power; sample size; binary response; response probabilities (search for similar items in EconPapers)
Date: 2010-12-04, Revised 2015-11-10
Note: This module should be installed from within Stata by typing "ssc install lbpower". 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/l/lbpower.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/l/lbpower.hlp help file (text/plain)
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Persistent link: https://EconPapers.repec.org/RePEc:boc:bocode:s457211
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