impute_pdates

Imputes missing date elements for start or end dates. Partial dates should be
in the format <code>"UNKN-UN-UN"</code> or some combination of those characters and
numbers (ie <code>"2017-UN-UN"</code>). Dates with no information or dates with a
missing year will be converted to <code>NA</code>. For start dates, missing days are
assumed to be the first of the month while missing months are assumed to be
January. For end dates, missing days are assumed to be the last day of the
month and missing months are assumed to be December.

Provides a set of tools to assist statistical programmers
in validating Study Data Tabulation Model (SDTM) domain data sets.
Statistical programmers are required to validate that a SDTM data set domain
has been programmed correctly, per the SDTM Implementation Guide (SDTMIG) by
'CDISC' (<https://www.cdisc.org/standards/foundational/sdtmig>),
study specification, and study protocol using a process called double
programming. Double programming involves two different programmers
independently converting the raw electronic data cut (EDC) data into a SDTM
domain data table and comparing their results to ensure accurate
standardization of the data. One of these attempts is termed 'production'
and the other 'validation'. Generally, production runs are the official
programs for submittals and these are written in 'SAS'. Validation runs can
be programmed in another language, in this case 'R'.

Stephen Knapp

sdtmval

Validate SDTM Domains

impute_pdates function

<dl><dt>dates</dt>
<dd>a character vector of partial dates (which could also contain
full dates) in the format YYYY-MM-DD</dd>
<dt>ptype</dt>
<dd>a string of either <code>"start"</code> or <code>"end"</code> indicating whether start
or end dates should be imputed, respectively</dd>
<dt>input_sep</dt>
<dd>the character that separates date components in <code>dates</code>,
default is <code>"-"</code></dd></dl>

Arguments

Impute start or end dates — impute_pdates

<dl>

<dt>dates</dt>
<dd>a character vector of partial dates (which could also contain
full dates) in the format YYYY-MM-DD</dd>


<dt>ptype</dt>
<dd>a string of either <code>"start"</code> or <code>"end"</code> indicating whether start
or end dates should be imputed, respectively</dd>


<dt>input_sep</dt>
<dd>the character that separates date components in <code>dates</code>,
default is <code>"-"</code></dd>

</dl>

impute_pdates: Impute start or end dates

Description

Usage

Value

Arguments

See Also

Examples