cthist-package | R Documentation |
Retrieves historical versions of clinical trial registry entries from https://ClinicalTrials.gov. Package functionality and implementation for v 1.0.0 is documented in Carlisle (2022) \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1371/journal.pone.0270909")}.
This package provides 4 functions for mass-downloading and interpreting historical clinical trial registry entry data from ClinicalTrials.gov
The functions for downloading clinical trial registry data from DRKS that were provided in versions 1.0.0 to 1.3.0 have been deprecated due to the re-writing of drks.de in a manner that broke the previous implementation of web-scraping
clinicaltrials_gov_dates() downloads the dates on which clinical trial registry entries were updated from ClinicalTrials.gov
clinicaltrials_gov_version() downloads a specified historical version of a clinical trial registry entry from ClinicalTrials.gov
clinicaltrials_gov_download() mass-downloads clinical trial registry entry versions for one or many trials on ClinicalTrials.gov
extract_publications() interprets a data frame provided by clinicaltrials_gov_download() and provides a new data frame with one row per publication of the type specified indexed by ClinicalTrials.gov per clinical trial registry history version.
overall_status_lengths() interprets a data frame provided by clinicaltrials_gov_download() or clinicaltrials_gov_dates() and provides a new data frame that indicates how many days were spent in each overall status.
Maintainer: Benjamin Gregory Carlisle murph@bgcarlisle.com (ORCID)
Carlisle, BG. Analysis of clinical trial registry entry histories using the novel R package cthist. medRxiv, 2022. doi: 10.1101/2022.01.20.22269538
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