WeightIt

1.7.0

Weighting for Covariate Balance in Observational Studies

23packages depend

122Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Noah GreiferFirst published 2017-10-1733 releasesCRAN page ↗GitHub ↗

Generates balancing weights for causal effect estimation in observational studies with binary, multi-category, or continuous point or longitudinal treatments by easing and extending the functionality of several R packages and providing in-house estimation methods. Available methods include those that rely on parametric modeling, optimization, and machine learning. Also allows for assessment of weights and checking of covariate balance by interfacing directly with the 'cobalt' package. Methods for estimating weighted regression models that take into account uncertainty in the estimation of the weights via M-estimation or bootstrapping are available. See the vignette "Installing Supporting Packages" for instructions on how to install any optional package 'WeightIt' uses, including those that may not be on CRAN.

Install

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

install.packages("WeightIt", 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("ngreifer/WeightIt")

Development version from ngreifer/WeightIt. 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-weightit

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-WeightIt

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-WeightIt

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

Health

CRAN checks

13OK

Slowest check: 9.2 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.19

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-26
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-03-10
4 OK · 0 NOTE · 1 WARNING · 9 ERROR · 0 FAILURE

Documentation

READMEYes · 1,053 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 95%
Return-value docs: 87%
References docs: 49%

Downloads

122K

CRAN downloads in the past year

Rank #1,185 · ~334/day · ~10.2K/mo

Releases R versions

Daily download trend is not available in this view yet.

9.3K30 days

31.9K90 days

122K1 year

Compare downloads with other packages →

Also on417 r2u37 autocran4.6K conda_forge84 c2d4u

Repository

GitHub ↗ ngreifer/weightit

132Stars

22Forks

9Open issues

0Open PRs

0Releases

1,024Commits

4Contributors

causal-inferencepropensity-scoresinverse-probability-weightsobservational-studyr

1,024 commits · Last activity 2026-07-17 · +0.8% stars, 30d

Stars over time

2025-07-21 · 1152026-07-07 · 132

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/ngreifer/weightit on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

Docs source (1)

README.Rmd

Lint, format, editor (2)

lintrRStudio project

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

Dependencies

Declared dependencies

31 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (9)

cobalt ggplot2 cli rlang sandwich genericsutilsstatsarg

LinkingTo (0)

none

Suggests (27)

rootSolve CBPS optweight SuperLearner mclogit MNP brglm2 (>= 0.5.2)enrichwith logistf osqp (>= 1.0.0)survivalfwbsplinesmarginaleffects adrftoolsMASSgbm dbarts misaem GPBayes mlogit dfidx broom knitr rmarkdown testthat waldo

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

23direct

0indirect

CIMTx MatchThem mvGPS senseweight vbm DAGassist adjustedCurves adrftools clarify cobalt forestBalance fullRankMatrix insight jointVIP lmw mccount oalasso optweight parameters propensity psAve psborrow2 sim.BA

Code & Tests

Code Composition

R 25,323 (78%)Rd 5,423 (17%)Vignettes 1,115 (3%)Other 557 (2%)

Code characteristics

Object systems

S368

Cyclomatic complexity: 4.0 median / 56 max
Test cases: 47 / 0.19 per code line

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

272 16 exported

Complexity

9 avg / 56 max

Call network

272 nodes / 1120 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

Per-function coverage is not measured for this package yet.

Datasets

Bundled datasets · 1

Name	Class	Rows × Cols	Also ships in
msmdata	data.frame	7,500 × 10	–

People & History

People (1)

Maintainer (1)

Noah Greifer

Author, Maintainer

Authors (1)

Noah Greifer

Author, Maintainer

Listed in earlier versions (1)

Noah Greifer ()

no longer listed · 0.7.0 to 0.7.1

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
1.7.0Latest
2026-04-22 · current release · diff ↗
1.6.0
2026-03-19 · diff ↗
1.5.1
2025-11-15 · diff ↗
1.5.0
2025-09-18 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.4.0
2025-02-24 · diff ↗
1.3.2
2024-11-05 · diff ↗
1.3.1
2024-10-04 · diff ↗
1.3.0
2024-08-24 · diff ↗
1.2.0
2024-07-27 · diff ↗
1.1.0
2024-05-04 · diff ↗
R
R 4.4.0 released · 2024-04-24
1.0.0
2024-03-23 · diff ↗
0.14.2
2023-05-23 · diff ↗
0.14.1
2023-05-10 · diff ↗

Show 32 earlier events

R
R 4.3.0 released · 2023-04-21
0.14.0
2023-04-12 · diff ↗
0.13.1
2022-06-28 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.12.0
2021-04-03 · diff ↗
0.11.0
2021-02-02 · diff ↗
0.10.2
2020-08-27 · diff ↗
0.10.1
2020-08-12 · diff ↗
0.10.0
2020-07-07 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.9.0
2020-02-11 · diff ↗
0.8.0
2020-01-12 · diff ↗
0.7.1
2019-10-30 · diff ↗
0.7.0
2019-10-16 · diff ↗
0.6.0
2019-09-05 · diff ↗
unarchivedReturned to CRAN
2019-09-05
archivedRemoved from CRAN
2019-09-03
uses archived package 'optweight' unconditionally
R
R 3.6.0 released · 2019-04-26
0.5.1
2019-01-16 · diff ↗
0.5.0
2018-11-22 · diff ↗
0.4.0
2018-06-25 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.3.2
2018-03-14 · diff ↗
0.3.1
2018-03-03 · diff ↗
unarchivedReturned to CRAN
2018-03-03
archivedRemoved from CRAN
Archived package 'CBPS'
archivedRemoved from CRAN
2018-02-09
using Suggests packages unconditionally was not corrected despite reminders
0.3.0
2018-01-14 · diff ↗
0.2.0
2017-11-13 · diff ↗
0.1.0
2017-10-17
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-10-17
Total releases: 33 / 9 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 4.1.0
Bundled data: 19 KB / 1 file
Download size: 1.0 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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Causal Inference

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