Other packages > Find by keyword >

Explore topics

By keyword . Oldest R packages . Newest R packages . Top downloaded R packages . Datasets . Archived R packages . Top downloaded last week . Top downloaded yesterday

ctrdata

Star Watch Copy Code

Retrieve and Analyze Clinical Trials Data from Public Registers

View on CRAN: Click here

Download and install ctrdata package within the R console
Install from CRAN:

 install.packages("ctrdata")

Install from Github:

 library("remotes")

                        install_github("cran/ctrdata")

Install by package version:

 library("remotes")

                        install_version("ctrdata", "1.26.0")

Attach the package and use:

 library("ctrdata")

Maintained by
Ralf Herold
[Scholar Profile | Author Map]

All associated links for this package

First Published: 2019-03-12

Latest Update: 2025-07-25

Description:

A system for querying, retrieving and analyzing protocol- and results-related information on clinical trials from four public registers, the 'European Union Clinical Trials Register' ('EUCTR', ), 'ClinicalTrials.gov' ('CTGOV', using the classic interface at , and 'CTGOV2', using the current interface at ), the 'ISRCTN' () and the 'European Union Clinical Trials Information System' ('CTIS', ). Trial information is downloaded, converted and stored in a database ('PostgreSQL', 'SQLite', 'DuckDB' or 'MongoDB'; via package 'nodbi'). Documents in registers associated with trials can also be downloaded. Other functions identify deduplicated records, easily find and extract variables (fields) of interest even from complex nested data as used by the registers, merge variables and update queries. The package can be used for meta-analysis and trend-analysis of the design and conduct as well as of the results of clinical trials.

How to cite:

Ralf Herold (2019). ctrdata: Retrieve and Analyze Clinical Trials Data from Public Registers. R package version 1.26.0, https://cran.r-project.org/web/packages/ctrdata. Accessed 28 Aug. 2026.

Previous versions and publish date:

(2026-07-12 20:20), 0.14.1 (2019-03-12 17:26), 0.17.0 (2019-03-27 22:50), 0.18.2 (2019-05-01 19:30), 0.18 (2019-04-11 23:57), 1.0.1 (2019-10-23 09:50), 1.0 (2019-10-16 23:50), 1.1 (2019-11-13 01:20), 1.2.1 (2020-05-18 18:40), 1.2 (2019-12-08 08:30), 1.3.0 (2020-07-27 11:50), 1.3.1 (2020-08-02 03:10), 1.3.2 (2020-10-05 09:20), 1.4.0 (2020-10-19 19:40), 1.4.1 (2020-11-03 22:30), 1.5.0 (2021-03-16 13:20), 1.5.1 (2021-03-21 16:50), 1.5.2 (2021-04-06 09:10), 1.5.3 (2021-04-20 00:10), 1.6.0 (2021-05-10 02:02), 1.7.0 (2021-07-25 15:30), 1.7.1 (2021-08-22 23:30), 1.8.0 (2021-11-22 00:00), 1.9.0 (2022-03-13 23:40), 1.9.1 (2022-04-24 16:30), 1.10.0 (2022-07-06 12:20), 1.10.1 (2022-07-24 23:50), 1.10.2 (2022-08-20 23:50), 1.11.0 (2022-11-02 23:20), 1.11.1 (2022-11-20 23:00), 1.12.0 (2023-03-26 10:30), 1.12.1 (2023-03-29 09:00), 1.13.0 (2023-04-24 14:20), 1.13.1 (2023-05-07 21:20), 1.13.2 (2023-05-26 11:30), 1.13.3 (2023-06-24 12:50), 1.14.0 (2023-07-16 23:40), 1.15.0 (2023-08-28 01:10), 1.15.1 (2023-08-30 11:10), 1.15.2 (2023-09-18 00:50), 1.16.0 (2023-11-24 16:40), 1.17.0 (2024-01-22 21:53), 1.17.1 (2024-02-05 00:30), 1.17.2 (2024-02-25 13:10), 1.18.0 (2024-05-13 22:53), 1.19.0 (2024-06-30 14:50), 1.19.1 (2024-07-18 21:00), 1.19.2 (2024-08-29 02:00), 1.19.3 (2024-09-22 18:10), 1.19.4 (2024-09-29 20:10), 1.19.5 (2024-11-10 18:10), 1.20.0 (2024-12-14 11:00), 1.21.0 (2025-03-09 22:50), 1.21.1 (2025-03-15 23:10), 1.22.0 (2025-04-14 19:50), 1.22.1 (2025-05-05 08:00), 1.22.2 (2025-05-17 16:20), 1.22.3 (2025-06-08 09:10), 1.23.0 (2025-07-02 22:40), 1.24.0 (2025-07-21 09:40), 1.24.1 (2025-07-25 12:10), 1.25.0 (2025-08-26 10:30), 1.25.1 (2025-12-08 02:00), 1.26.0 (2026-01-18 09:30), 1.26.1 (2026-03-08 20:20)

Other packages that cited ctrdata R package

View ctrdata citation profile

Other R packages that ctrdata depends, imports, suggests or enhances

View ctrdata dependency map

Complete documentation for ctrdata

View documentation PDF

Functions, R codes and Examples using the ctrdata R package

Some associated functions: ctrDb . ctrFindActiveSubstanceSynonyms . ctrGetQueryUrl . ctrLoadQueryIntoDb . ctrOpenSearchPagesInBrowser . ctrdata-registers . ctrdata . dbFindFields . dbFindIdsUniqueTrials . dbGetFieldsIntoDf . dbQueryHistory . dfMergeVariablesRelevel . dfName2Value . dfTrials2Long .
Some associated R codes: ctrFindActiveSubstanceSynonyms.R . ctrGetQueryUrl.R . ctrLoadQueryIntoDb.R . ctrLoadQueryIntoDbCtgov.R . ctrLoadQueryIntoDbCtgov2.R . ctrLoadQueryIntoDbCtis.R . ctrLoadQueryIntoDbEuctr.R . ctrLoadQueryIntoDbIsrctn.R . ctrOpenSearchPagesInBrowser.R . ctrRerunQuery.R . ctrdata-package.R . ctrdata-registers.R . dbFindFields.R . dbFindIdsUniqueTrials.R . dbGetFieldsIntoDf.R . dbQueryHistory.R . dfMergeVariablesRelevel.R . dfName2Value.R . dfTrials2Long.R . utils.R . zzz.R . Full ctrdata package functions and examples

Downloads during the last 30 days

Today's Hot Picks in Authors and Packages

spatialCovariance

Computation of Spatial Covariance Matrices for Data on Rectangles

Functions that compute the spatial covariance matrix for the matern and power classes of spatial mod ...
Download / Learn more Package Citations See dependency

Maintainer: David Clifford (view profile)

mxnorm

Apply Normalization Methods to Multiplexed Images

Implements methods to normalize multiplexed imaging data, including statistical metrics and visuali ...
Download / Learn more Package Citations See dependency

Maintainer: Coleman Harris (view profile)

survivalMPLdc

Penalised Likelihood for Survival Analysis with Dependent Censoring

Fitting Cox proportional hazard model under dependent right censoring using copula and maximum penal ...
Download / Learn more Package Citations See dependency

Maintainer: Jing Xu (view profile)

nextGenShinyApps

Craft Exceptional 'R Shiny' Applications and Dashboards with Novel Responsive Tools

Nove responsive tools for designing and developing 'Shiny' dashboards and applications. The scripts ...
Download / Learn more Package Citations See dependency

Maintainer: Obinna Obianom (view profile)

NPflow

Bayesian Nonparametrics for Automatic Gating of Flow-Cytometry Data

Dirichlet process mixture of multivariate normal, skew normal or skew t-distributions modeling orie ...
Download / Learn more Package Citations See dependency

Maintainer: Boris P Hejblum (view profile)

RGIFT

Create Quizzes in GIFT Format

Implementation of some functions to create quizzes in the GIFT format. This format is used by sever ...
Download / Learn more Package Citations See dependency

Maintainer: Virgilio Gómez-Rubio (view profile)