dbCTRUpdateQueryHistory

String with abbreviation of register to query,
at this time either "EUCTR" (default) or "CTGOV". Not needed
if <code>queryterm</code> provide the information which register to
query (see <code>queryterm</code>).

register

Either a string with the full URL of a search in
a register, or the data frame returned by the
<a rd-options="" href="/link/ctrGetQueryUrl?package=ctrdata&version=1.5.2" data-mini-rdoc="ctrdata::ctrGetQueryUrl">ctrGetQueryUrl</a> or the
<a rd-options="" href="/link/dbQueryHistory?package=ctrdata&version=1.5.2" data-mini-rdoc="ctrdata::dbQueryHistory">dbQueryHistory</a> functions, or, together with parameter
<code>register</code>, a string with query elements of a search URL.
The queryterm is recorded in the <code>collection</code> for later
use to update records.

queryterm

A <a rd-options="nodbi" href="/link/src?package=ctrdata&version=1.5.2&to=nodbi" data-mini-rdoc="nodbi::src">src</a> connection object, as obtained with
nodbi::<a rd-options="nodbi" href="/link/src_mongo?package=ctrdata&version=1.5.2&to=nodbi" data-mini-rdoc="nodbi::src_mongo">src_mongo</a>() or nodbi::<a rd-options="nodbi" href="/link/src_sqlite?package=ctrdata&version=1.5.2&to=nodbi" data-mini-rdoc="nodbi::src_sqlite">src_sqlite</a>()

Printing additional information if set to
<code>TRUE</code>; default is <code>FALSE</code>.

verbose

internal

Provides functions for querying, retrieving and analyzing
protocol- and results-related information on clinical trials from
two public registers, the 'European Union Clinical Trials Register'
('EUCTR', <https://www.clinicaltrialsregister.eu/>) and
'ClinicalTrials.gov' ('CTGOV', <https://clinicaltrials.gov/>). The
trial information is transformed and stored in a database ('SQLite'
or 'MongoDB', via 'nodbi'). Functions are provided to identify de-
duplicated records, to easily find and extract variables (fields)
of interest even from complex nesting as used by the registers,
and to update previous queries that users retrieved in a database.
The package can be used for meta analysis and trend-analysis of
the design and conduct as well as results of clinical trials.

Ralf Herold

ctrdata

Retrieve and Analyze Clinical Trials in Public Registers

dbCTRUpdateQueryHistory function

Either a string with the full URL of a search in
a register, or the data frame returned by the
<a rd-options='' href='ctrGetQueryUrl'>ctrGetQueryUrl</a> or the
<a rd-options='' href='dbQueryHistory'>dbQueryHistory</a> functions, or, together with parameter
<code>register</code>, a string with query elements of a search URL.
The queryterm is recorded in the <code>collection</code> for later
use to update records.

A <a rd-options='nodbi' href='src'>src</a> connection object, as obtained with
nodbi::<a rd-options='nodbi' href='src_mongo'>src_mongo</a>() or nodbi::<a rd-options='nodbi' href='src_sqlite'>src_sqlite</a>()

dbCTRUpdateQueryHistory: dbCTRUpdateQueryHistory

Description

Usage

Arguments