# Retrieve and Analyze Information on Clinical Trials from Public Registers

## Documentation for package ‘ctrdata’ version 0.18.2

- DESCRIPTION file.
- User guides, package vignettes and other documentation.

## Help Pages

ctrFindActiveSubstanceSynonyms | Find synonyms of an active substance
ctrGetQueryUrlFromBrowser | Import from clipboard the URL of a search in one of the registers
ctrLoadQueryIntoDb | Retrieve or update information on clinical trials from register and store in database
ctrOpenSearchPagesInBrowser | Open advanced search pages of register(s) or execute search in browser
dbFindFields | Find names of fields in the database collection
dbFindIdsUniqueTrials | Deduplicate records to provide unique clinical trial identifiers
dbGetFieldsIntoDf | Create data frame by extracting specified fields from database collection
dbQueryHistory | Show the history of queries that were loaded into a database collection
dfMergeTwoVariablesRelevel | Merge two variables into one, optionally map values to new levels
installCygwinWindowsDoInstall | Convenience function to install a cygwin environment under MS Windows, including perl, sed and php