chandwich

1.1.6

Chandler-Bate Sandwich Loglikelihood Adjustment

4packages depend

29.8Kdownloads / year

89.3%test coverage

13/13checks pass

Overview

About

Maintained by Paul J. NorthropFirst published 2018-03-068 releasesCRAN page ↗GitHub ↗

Performs adjustments of a user-supplied independence loglikelihood function using a robust sandwich estimator of the parameter covariance matrix, based on the methodology in Chandler and Bate (2007) doi:10.1093/biomet/asm015. This can be used for cluster correlated data when interest lies in the parameters of the marginal distributions or for performing inferences that are robust to certain types of model misspecification. Functions for profiling the adjusted loglikelihoods are also provided, as are functions for calculating and plotting confidence intervals, for single model parameters, and confidence regions, for pairs of model parameters. Nested models can be compared using an adjusted likelihood ratio test.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("chandwich", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("paulnorthrop/chandwich")

Development version from paulnorthrop/chandwich. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-chandwich

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-chandwich

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-chandwich

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 4.5 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.31

89.3%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 343 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 77%
Return-value docs: 100%
References docs: 32%

Downloads

29.8K

CRAN downloads in the past year

Rank #2,552 · ~82/day · ~2.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.4K30 days

8.6K90 days

29.8K1 year

Compare downloads with other packages →

Also on207 r2u39 autocran34 c2d4u

Repository

GitHub ↗ paulnorthrop/chandwich

4Stars

1Forks

0Open issues

1Open PRs

8Releases

438Commits

1Contributors

independence-loglikelihoodsandwichrobustmlestatistical-inferenceclustered-dataclusterscomposite-likelihood

License GPL-3.0 · 438 commits · Last activity 2026-01-01

Stars over time

2023-08-26 · 42026-07-07 · 4

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/paulnorthrop/chandwich on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.3.0

Imports (5)

graphicsmethodsnumDerivstatsutils

LinkingTo (0)

none

Suggests (4)

knitr rmarkdown sandwich testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

4direct

4indirect

chantrics exdex lax lite

Code & Tests

Code Composition

R 4,404 (61%)Rd 2,041 (28%)Other 586 (8%)Vignettes 234 (3%)

Code characteristics

Object systems

S313

Cyclomatic complexity: 8.0 median / 73 max
Test cases: 103 / 0.31 per code line

Test coverage

Line coverage

89%

Expression

88.7%

Tests / Examples

89.3% / 76% ex

Functions

19 6 exported

Complexity

15.6 avg / 73 max

Call network

19 nodes / 2 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

19 functions

Function	Cyclo	Coverage
print.chandwich	2	0%
print.summary.chandwich	2	0%
anova.chandwich	10	69%
print.compmod	8	79%
coef.chandwich	3	83%
logLik.chandwich	2	86%

Datasets

Bundled datasets · 1

Name	Class	Rows × Cols	Also ships in
owtemps	data.frame	80 × 2	–

People & History

People (2)

Maintainer (1)

Paul J. Northrop

Author, Maintainer, Copyright holder

Authors (2)

Paul J. Northrop

Author, Maintainer, Copyright holder

Richard E. Chandler

Author, Copyright holder

Paul J. Northrop

Author, Maintainer, Copyright holder

Richard E. Chandler

Author, Copyright holder

Listed in earlier versions (3)

Richard Chandler

no longer listed · 1.0.0 to 1.1.0

Paul J.

no longer listed · 1.0.0 to 1.1.6

Richard E.

no longer listed · 1.1.1 to 1.1.6

Package Timeline

8 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.1.6Latest
2023-08-25 · current release · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
1.1.5
2021-10-30 · diff ↗
1.1.4
2021-07-02 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.1.3
2020-11-07 · diff ↗
R
R 4.0.0 released · 2020-04-24
1.1.2
2019-07-11 · diff ↗
R
R 3.6.0 released · 2019-04-26
1.1.1
2018-11-28 · diff ↗
1.1.0
2018-09-10 · diff ↗
R
R 3.5.0 released · 2018-04-23

Show 2 earlier events

1.0.0
2018-03-06
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2018-03-06
Total releases: 8 / 8 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.3.0
Bundled data: 0.6 KB / 2 files
Download size: 110 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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