R Observatory: Metrics for cohetsurr version 2.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

cohetsurr

2.0Package record

Assessing Complex Heterogeneity in Surrogacy

0packages depend

2.3Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Layla ParastCRAN page ↗

Provides functions to assess complex heterogeneity in the strength of a surrogate marker with respect to multiple baseline covariates, in either a randomized treatment setting or observational setting. For a randomized treatment setting, the functions assess and test for heterogeneity using both a parametric model and a semiparametric two-step model. More details for the randomized setting are available in: Knowlton, R., Tian, L., & Parast, L. (2025). "A General Framework to Assess Complex Heterogeneity in the Strength of a Surrogate Marker," Statistics in Medicine, 44(5), e70001 doi:10.1002/sim.70001. For an observational setting, functions in this package assess complex heterogeneity in the strength of a surrogate marker using meta-learners, with options for different base learners. More details for the observational setting will be available in the future in: Knowlton, R., Parast, L. (2025) "Assessing Surrogate Heterogeneity in Real World Data Using Meta-Learners." A tutorial for this package can be found at https://www.laylaparast.com/cohetsurr.

Install

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

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

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

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-cohetsurr

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-cohetsurr

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-cohetsurr

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 1.7 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.0

READMENoVignettesNoNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 10 (5 internal)
Examples that run: 100%5 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 20%

How these are measured

Downloads

2.3K

CRAN downloads in the past year

Rank #18,371 · ~6/day · ~194/mo

Releases R versions

Daily download trend is not available in this view yet.

25330 days

71390 days

2.3K1 year

Compare downloads with other packages →

Also on84 r2u8 autocran

How downloads are counted

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Installing cohetsurr adds 9 packages (8 with compiled code, 7.7 MB of source tarballs). Heaviest: Rcpp 1.8 MB, RcppEigen 1.7 MB, sandwich 1.4 MB.

Depends (0)

none

Imports (5)

statsmatrixStats mvtnormmgcvgrf

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (2)

Layla Parast

Author, Maintainer since 1.1 (2025) · added in 1.1

Rebecca Knowlton

Author

Previously maintained by Rebecca Knowlton (1.0).

Releases (3)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2.0Latest
record
2025-04-11 · current release · diff ↗ ·
added 1 export
obs.het.surr
R
R 4.5.0 released · 2025-04-11
1.1
record
2025-03-06 · diff ↗
1.0
record
2024-11-21
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-11-21
Total releases: 3 / 2 yrs
License: GPL
Bundled data: 168 KB / 3 files
Download size: 178 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("cohetsurr")

Format

Parast, L., & Knowlton, R. (2025). cohetsurr: Assessing Complex Heterogeneity in Surrogacy (Version 2.0) [Computer software]. https://doi.org/10.32614/CRAN.package.cohetsurr

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for cohetsurr version 2.0 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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