PMEAN: Stata module to compute panel-data means and exact within-between decomposition for two- and three-dimensional panel data

Ahmad Nawaz () and Jianghuai Zheng ()
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Jianghuai Zheng: Department of Industrial Economics, Nanjing University

Statistical Software Components from Boston College Department of Economics

Abstract: pmean computes panel-data means and the exact within-between decomposition for two-dimensional (id x time) and three-dimensional (id x time x dim3) panel data. For each input variable, the command generates marginal means (overall, by id, by time, and optionally by a third dimension), the implied within and between components, and two- and three-way fixed-effect residuals. With dim3() and full, the command additionally generates the full ANOVA-style pairwise interaction components and the three-way residual. The additive identities (2D, 3D main effects, and full 3-way ANOVA) hold exactly at every observation in any panel, balanced or unbalanced. The third dimension can represent a sector, region, product group, industry, cohort, or any other grouping observed alongside the panel id and time. The estimation sample is defined by if, in, and observations with nonmissing values of id(), time(), and, when supplied, dim3(). Missing values of the analysis variables are handled variable by variable unless the listwise option is specified.

Language: Stata
Requires: Stata version 15.1
Keywords: panel data; means; within; between (search for similar items in EconPapers)
Date: 2026-05-19
Note: This module should be installed from within Stata by typing "ssc install pmean". The module is made available under terms of the MIT license (https://opensource.org/licenses/MIT).
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http://fmwww.bc.edu/repec/bocode/p/pmean.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/p/pmean.sthlp help file (text/plain)

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