check_ex_dup: Check for duplicate EX records

In sdtmchecks: Data Quality Checks for Study Data Tabulation Model (SDTM) Datasets

Check for duplicate EX records

Description

This check looks for duplicate treatment records in EX

Usage

check_ex_dup(EX)

Arguments

EX	Exposure SDTM dataset with variables USUBJID, EXTRT, EXDOSE, EXSTDTC, EXSTDTC. VISIT is optional.

Value

boolean value if check failed or passed with 'msg' attribute if the test failed

Author(s)

Fang Yuan

Examples

EX <- data.frame(
 USUBJID = rep(1,2),
 EXTRT = rep(1,2),
 EXDOSE = rep(1,2),
 EXSTDTC = rep(1,2),
 EXOCCUR = "Y"
)
check_ex_dup(EX)

EX$EXOCCUR <- NULL

check_ex_dup(EX)

EX$EXDOSE <- NULL

check_ex_dup(EX)

# test with sample data without duplicates

EX <- data.frame(
USUBJID = 1:2,
EXTRT = 1:2,
EXDOSE = 1:2,
EXSTDTC = 1:2,
EXOCCUR = "Y"
)

check_ex_dup(EX)

EX = rbind(EX,EX)

check_ex_dup(EX)

# check non existing vars

EX$EXTRT <- NULL
EX$EXOCCUR <- NULL

check_ex_dup(EX)

sdtmchecks documentation built on Sept. 11, 2024, 9:34 p.m.