f.hasResults

Trial concept calculated: Calculates if results have been recorded in the
register, as structured data, reports or publications, for example.
Requires loading results-related information for EUCTR.

A system for querying, retrieving and analyzing
protocol- and results-related information on clinical trials from
four public registers, the 'European Union Clinical Trials Register'
('EUCTR', <https://www.clinicaltrialsregister.eu/>),
'ClinicalTrials.gov' (<https://clinicaltrials.gov/> and also
translating queries the retired classic interface), the
'ISRCTN' (<http://www.isrctn.com/>) and the
'European Union Clinical Trials Information System'
('CTIS', <https://euclinicaltrials.eu/>).
Trial information is downloaded, converted and stored in a database
('PostgreSQL', 'SQLite', 'DuckDB' or 'MongoDB'; via package 'nodbi').
Protocols, statistical analysis plans, informed consent sheets and other
documents in registers associated with trials can also be downloaded.
Other functions implement trial concepts canonically across registers,
identify deduplicated records, easily find and extract variables
(fields) of interest even from complex nested data as used by the
registers, merge variables and update queries.
The package can be used for monitoring, meta- and trend-analysis of
the design and conduct as well as of the results of clinical trials
across registers.

Ralf Herold

ctrdata

Retrieve and Analyze Clinical Trials Data from Public Registers

f.hasResults function

<dl><dt>df</dt>
<dd>data frame such as from dbGetFieldsIntoDf. If `NULL`,
prints fields needed in `df` for calculating this trial concept, which can
be used with dbGetFieldsIntoDf.</dd></dl>

Arguments

Calculate if a study's results are available — f.hasResults

<dl>

<dt>df</dt>
<dd>data frame such as from dbGetFieldsIntoDf. If `NULL`,
prints fields needed in `df` for calculating this trial concept, which can
be used with dbGetFieldsIntoDf.</dd>

</dl>

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

Description

Usage

Value

Arguments

Examples