Package index • ctrdata

ctrdata-registers: Information on clinical trial registers

ctrdata-trial-concepts: Trial concepts implemented across registers

ctrdata: Getting started, database connection, function overview

Load information from clinical trial registers

ctrFindActiveSubstanceSynonyms(): Find synonyms of an active substance

ctrGenerateQueries(): Generates queries that work across registers

ctrGetQueryUrl(): Get register name and query parameters from search URL

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

Use database with downloaded trial information

dbFindFields(): Find names of fields in the database collection

dbFindIdsUniqueTrials(): Get identifiers of deduplicated trial records

dbGetFieldsIntoDf(): Create data frame of specified fields or trial concepts from database collection

dbQueryHistory(): Show history of queries loaded into collection

Operate on data frame from dbGetFieldsIntoDf

dfMergeVariablesRelevel(): Merge variables, keeping type where possible, optionally relevel factors

dfName2Value(): Get value for variable of interest

dfTrials2Long(): Convert data frame with trial records into long format

Calculate trial concepts

f.assignmentType(): Calculate type of assignment to intervention in a study

f.controlType(): Calculate type of control data collected in a study

f.externalLinks(): Calculate the external references from a study's register record

f.hasResults(): Calculate if a study's results are available

f.isMedIntervTrial(): Calculate if study is a medicine-interventional study

f.isUniqueTrial(): Calculate if record is unique for a study

f.likelyPlatformTrial(): Calculate if study is likely a platform trial or not

f.numSites(): Calculate number of sites of a study

f.numTestArmsSubstances(): Calculate number of arms or groups with investigational medicines in a study

f.primaryEndpointDescription(): Calculate details of a primary endpoint of a study

f.primaryEndpointResults(): Calculate details of a study's primary endpoint analysis and testing

f.resultsDate(): Calculate date of results of a study

f.sampleSize(): Calculate sample size of a study

f.sponsorType(): Calculate type of sponsor of a study

f.startDate(): Calculate start date of a study

f.statusRecruitment(): Calculate status of recruitment of a study

f.trialObjectives(): Calculate objectives of a study

f.trialPhase(): Calculate phase of a clinical trial

f.trialPopulation(): Calculate in- and exclusion criteria and age groups

f.trialTitle(): Calculate the title of a study