# Retrieve and Analyze Clinical Trials in Public Registers

## Documentation for package ‘ctrdata’ version 1.20.0

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

## Help Pages

ctrdata-package | ctrdata: get started, database connection, function overview
ctrdata | ctrdata: get started, database connection, function overview
ctrdata-registers | ctrdata: information on clinical trial registers
ctrFindActiveSubstanceSynonyms | Find synonyms of an active substance
ctrGetQueryUrl | Get query details
ctrLoadQueryIntoDb | Load and store register trial information
ctrOpenSearchPagesInBrowser | Open register to show query results or search page
ctrShowOneTrial | Show full structure and all data of a trial
dbFindFields | Find names of fields in the database collection
dbFindIdsUniqueTrials | Get identifiers of deduplicated trial records
dbGetFieldsIntoDf | Create data frame of specified fields from database collection
dbQueryHistory | Show history of queries loaded into a database collection
dfMergeVariablesRelevel | Merge variables, keeping type, and optionally relevel factors
dfName2Value | Get value for variable of interest
dfTrials2Long | Convert data frame with trial records into long format