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clubSandwich

Cluster-Robust (Sandwich) Variance Estimators with Small-Sample Corrections

v0.6.2 · Feb 1, 2026 · GPL-3

Description

Provides several cluster-robust variance estimators (i.e., sandwich estimators) for ordinary and weighted least squares linear regression models, including the bias-reduced linearization estimator introduced by Bell and McCaffrey (2002) <https://www150.statcan.gc.ca/n1/pub/12-001-x/2002002/article/9058-eng.pdf> and developed further by Pustejovsky and Tipton (2017) <DOI:10.1080/07350015.2016.1247004>. The package includes functions for estimating the variance- covariance matrix and for testing single- and multiple- contrast hypotheses based on Wald test statistics. Tests of single regression coefficients use Satterthwaite or saddle-point corrections. Tests of multiple- contrast hypotheses use an approximation to Hotelling's T-squared distribution. Methods are provided for a variety of fitted models, including lm() and mlm objects, glm(), geeglm() (from package 'geepack'), lm_robust() and lm_lin() (from package 'estimatr'), ivreg() (from package 'AER'), ivreg() (from package 'ivreg' when estimated by ordinary least squares), plm() (from package 'plm'), gls() and lme() (from 'nlme'), lmer() (from `lme4`), robu() (from 'robumeta'), and rma.uni() and rma.mv() (from 'metafor').

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Check History

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026

Reverse Dependencies (21)

Dependency Network

Dependencies Reverse dependencies sandwich lifecycle EquiTrends MAIVE PublicationBiasBenchmark RESI SynergyLMM citsr wildmeta estimatr ggeffects insight lavaSearch2 metadat metafor misty mlmhelpr +6 more reverse deps clubSandwich

Version History

new 0.6.2 Mar 9, 2026