f.externalLinks {ctrdata}R Documentation

Calculate the external references from a study's register record

Description

Trial concept calculated: Calculates the links e.g. to publications or other external files referenced from a study record. Requires loading results-related information for EUCTR. Note that documents stored in registers can be downloaded directly, see ctrLoadQueryIntoDb.

Usage

f.externalLinks(df = NULL)

Arguments

df

data frame such as from dbGetFieldsIntoDf. If 'NULL', prints fields needed in 'df' for calculating this trial concept, which can be used with dbGetFieldsIntoDf.

Value

data frame with columns '_id' and new column '.externalLinks' (character).

Examples

# fields needed
f.hasResults()

# apply trial concept when creating data frame
dbc <- nodbi::src_sqlite(
  dbname = system.file("extdata", "demo.sqlite", package = "ctrdata"),
  collection = "my_trials", flags = RSQLite::SQLITE_RO)
trialsDf <- dbGetFieldsIntoDf(
  calculate = "f.externalLinks",
  con = dbc)
trialsDf


[Package ctrdata version 1.24.0 Index]