dtc_dupl_early {sdtmchecks} | R Documentation |
Check if start dates are duplicated or earlier than prior visit date
Description
This is a core function for checking if start dates are duplicated or earlier than last visit's (possible datetime data entry error), can be used in separate checks for each domain
Usage
dtc_dupl_early(dts, vars, groupby, dtc, ...)
Arguments
dts |
dataset, e.g. EX |
vars |
variables in a form c("USUBJID", "EXTRT", "VISITNUM", "VISIT", "EXSTDTC") |
groupby |
variables used for grouping and visit.order derivation |
dtc |
the date variable |
... |
variables used for ordering before visit.order derivation |
Value
dataframe with records of duplicated or earlier than last visit date
Author(s)
James Zhang
[Package sdtmchecks version 1.0.0 Index]