contdid

0.1.1

Difference-in-Differences with a Continuous Treatment

0packages depend

4Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Brantly CallawayFirst published 2025-07-032 releasesCRAN page ↗GitHub ↗

Provides methods for difference-in-differences with a continuous treatment and staggered treatment adoption. Includes estimation of treatment effects and causal responses as a function of the dose, event studies indexed by length of exposure to the treatment, and aggregation into overall average effects. Uniform inference procedures are included, along with both parametric and nonparametric models for treatment effects. The methods are based on Callaway, Goodman-Bacon, and Sant'Anna (2025) doi:10.48550/arXiv.2107.02637.

Install

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

install.packages("contdid", 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("bcallaway11/contdid")

Development version from bcallaway11/contdid. 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-contdid

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-contdid

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-contdid

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

Health

CRAN checks

13OK

Slowest check: 3.5 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.15

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-05-02
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-25
11 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 1,134 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 50%
Documented parameters: 98%
Return-value docs: 100%
References docs: 0%

Downloads

CRAN downloads in the past year

Rank #9,489 · ~11/day · ~335/mo

Releases R versions

Daily download trend is not available in this view yet.

38730 days

1.1K90 days

4K1 year

Compare downloads with other packages →

Also on87 r2u32 autocran

Repository

GitHub ↗ bcallaway11/contdid

64Stars

8Forks

7Open issues

0Open PRs

0Releases

66Commits

2Contributors

66 commits · Last activity 2026-07-21 · +3.2% stars, 30d

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/bcallaway11/contdid on 2026-07-26.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Docs source (1)

README.qmd

Research and citation (1)

CITATION.cff

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

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (8)

BMisc ptetools checkmate splines2 sandwich ggplot2MASSnpiv

LinkingTo (0)

none

Suggests (2)

testthat tidyr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (3)

Maintainer (1)

Brantly Callaway

Author, Maintainer

Authors (3)

Brantly Callaway

Author, Maintainer

Andrew Goodman-Bacon

Author

Pedro H. C. Sant'Anna

Author

Package Timeline

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

0.1.1Latest
2026-07-21 · current release · diff ↗
unarchivedReturned to CRAN
2026-07-21
archivedRemoved from CRAN
2026-07-16
requires archived package 'ptetools'
R
R 4.6.0 released · 2026-04-24
0.1.0
2026-03-10
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-07-03
Total releases: 2 / 1 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.1.0
Download size: 174 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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