ctrdata-registers {ctrdata}R Documentation

ctrdata: information on clinical trial registers

Description

Registers of clinical trials from which protocol- and result-related information can be retrieved and analysed with package ctrdata, last updated 2024-11-10.

1 - Overview

2 - Notable changes

CTGOV was retired on 2024-06-25; ctrdata subsequently translates CTGOV queries to CTGOV2 queries. The new website (CTGOV2) can be used with ctrdata since 2023-08-27. CTIS was relaunched on 2024-06-17, changing the data structure and search syntax, to which ctrdata was updated. CTIS can be used with ctrdata since 2023-03-25. More information on changes: here.

3 - References

Material EUCTR CTGOV2 ISRCTN CTIS
Home page link link link link
About link link link link
Terms & conditions, disclaimer link link link link
How to search link link link link
Search interface link link link link
Expert / advanced search link link link link
Glossary link link link
FAQ, caveats, issues link link link link
Definitions link link link link
Example* link link link link

4 - Example and ctrdata motivation

*The example is an expert search for interventional trials primarily with neonates, investigating infectious conditions. It shows that searches in registers may not be sufficient to identify the sought trials:

To address this, trials can be retrieved with ctrLoadQueryIntoDb into a database collection and in a second step can be selected, based on values of relevant fields of all retrieved trial information, for example:

ctrdata helps identifying fields with function dbGetFieldsIntoDf.

Author(s)

Ralf Herold ralf.herold@mailbox.org


[Package ctrdata version 1.19.5 Index]