| ctrdata-package | ctrdata: get started, connect database and function overview |
| ctrdata-registers | ctrdata: detailed 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 stored query or register search page |
| 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 |
| dfListExtractKey | Extract named element(s) from list(s) into long-format data frame |
| dfMergeTwoVariablesRelevel | Merge two variables |
| dfName2Value | Get value for variable of interest |
| dfTrials2Long | Convert data frame with trial records into long format |
| installCygwinWindowsDoInstall | Install necessary helper apps (Windows only) |