Software

eqtesting
[ CRAN Repository | Github Repository ]

An R package for equivalence testing. Provides the tst command, which implements the three-sided testing procedure (Goeman, Solari, & Stijnen 2010), as well as the lddtest command, which performs equivalence testing on logarithmic density discontinuities at the cutoff for running variables in regression discontinuity design (Fitzgerald 2025).

lddtest
[ SSC Package | Github Repository ]

A Stata command that performs equivalence testing on logarithmic density discontinuities at the cutoff for running variables in regression discontinuity design (Fitzgerald 2025).

lzqreg
[ Github Repository ]

A Stata command that implements an algorithm in Liu & Kaplan (2025) for estimating logarithmic slopes through quantile regressions; designed for data with non-positive values in the outcome variable. See also Fitzgerald et al. (2026).

lzrq
[ Github Repository ]

An R package containing the lzrq function, which implements an algorithm in Liu & Kaplan (2025) for estimating logarithmic slopes through quantile regressions; designed for data with non-positive values in the outcome variable. See also Fitzgerald et al. (2026). Developed jointly with David Valenta.

OpenAware Navigator
[ Website ]

A Shiny app for OpenAware transparency standards for restricted-access data. Co-created with Rianne Fijten, Bogdana-Raluca Huma, Santosh Ilamparuthi, Angelica Maineri, Mark van Assem, and Lotte van Burgsteden.

shinyTST
[ Website ]

A Shiny app for three-sided testing (Goeman, Solari, & Stijnen 2010). Shiny adaptation of the tst command in my eqtesting R package. Developed jointly with Peder Isager.

tsti
[ SSC Package | Github Repository ]

An immediate Stata command that implements the three-sided testing procedure (Goeman, Solari, & Stijnen 2010).