Replication in R

R code that regenerates the numbers this paper reports, starting from the dataset published on this site. It reproduces 38 of 39. The one that does not match is listed below.

Run it

Rscript run.R

run.R is the whole package. Save it and run it: it reads the dataset from this site if the CSV is not sitting beside it, and loads the shared conventions file the same way, so it works on its own in an empty directory. It needs R with fixest, and depending on the paper lme4, metafor, plm, BMS or LowRankQP. It writes results.json, one value per number, each named for where it appears in the paper.

How it compares with Stata

Most of these papers were estimated in Stata, and the two programs differ in places that change printed digits. Those conventions are stated once, in stata_compat.R, and shared by every replication on this site: ivreg2's large-sample variance, SSC winsor's order statistics, xtreg's treatment of singleton groups, and the restricted-ML default of xtmixed, which is not the default of the mixed command that replaced it.

Numbers that do not match the printed paper

Cells are named as they are in results.json. The reason for each difference follows the table.

cellpaperthis code
PanelA_PrecOLS_const_se0.0120.011209

Panel A is the one panel of this paper that does not follow its own deposited code: four independent Panel A cells match plain regress and none matches the ivreg2 the do-file uses, while Panels B and C follow the do-file exactly. Panel A therefore appears to have been reported from a different run. This constant's standard error is the one Panel A cell that falls in line with neither reading. The printed value is left exactly as published.

Files