Check for EX records where EXTRT is missing

This check looks for EX records where EXTRT is missing but EXOCCUR=Y (or EXOCCUR doesn't exist) and returns a data frame

check_ex_extrt_exoccur(EX)

Arguments

EX

Exposure domain with variables USUBJID, EXSTDTC, EXTRT, EXDOSE

Author

Betty Wang

Examples

EX <- data.frame(
USUBJID = 1:10,
EXTRT = 1:10,
EXOCCUR = c(rep("Y",5), rep("",5)),
EXSTDTC = "2016-01-01",
EXDOSE = 1:10,
stringsAsFactors=FALSE
)

EX$EXTRT[1]=""
EX$EXTRT[2]="NA"
EX$EXTRT[3]=NA
EX$EXTRT[6]=""
EX$EXTRT[7]="NA"
EX$EXTRT[8]=NA

check_ex_extrt_exoccur(EX)
#> [1] FALSE
#> attr(,"msg")
#> [1] "Patients with Missing EXTRT where EXOCCUR=Y"
#> attr(,"data")
#>   USUBJID    EXSTDTC EXTRT EXOCCUR EXDOSE
#> 1       1 2016-01-01             Y      1
#> 2       2 2016-01-01    NA       Y      2
#> 3       3 2016-01-01  <NA>       Y      3

EX$EXOCCUR=NULL

check_ex_extrt_exoccur(EX)
#> [1] FALSE
#> attr(,"msg")
#> [1] "Patients with Missing EXTRT. "
#> attr(,"data")
#>   USUBJID    EXSTDTC EXTRT EXDOSE
#> 1       1 2016-01-01            1
#> 2       2 2016-01-01    NA      2
#> 3       3 2016-01-01  <NA>      3
#> 4       6 2016-01-01            6
#> 5       7 2016-01-01    NA      7
#> 6       8 2016-01-01  <NA>      8