check_lb_lbstresu {sdtmchecks}

Check for missing lab units (LBSTRESU)

Description

This check identifies records where original lab values (LBORRES) exist but standard lab units (LBSTRESU) are not populated, excluding qualitative results (LBMETHOD) and excluding records when LBTESTCD in ("PH" "SPGRAV")

Usage

check_lb_lbstresu(LB, preproc = identity, ...)

Arguments

LB

Lab SDTM dataset with variables USUBJID, LBSTRESC, LBSTRESN, LBORRES, LBSTRESU, LBTESTCD, LBDTC, LBMETHOD (optional), LBSPID (optional), and VISIT (optional)

preproc

An optional company specific preprocessing script

...

Other arguments passed to methods

Value

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

Author(s)

Iris Zhao

Examples

LB <- data.frame(
USUBJID = 1:10,
LBSTRESC = "5",
LBSTRESN = 1:10,
LBORRES = "5",
LBSTRESU = "g/L",
LBTESTCD = "ALB",
LBDTC = 1:10,
stringsAsFactors=FALSE
)

check_lb_lbstresu(LB)

LB$LBSTRESU[1]=""
check_lb_lbstresu(LB)

LB$LBSTRESU[2]="NA"
check_lb_lbstresu(LB)

LB$LBSTRESU[3]=NA
check_lb_lbstresu(LB)

LB$LBSPID= "FORMNAME-R:2/L:2XXXX"
check_lb_lbstresu(LB,preproc=roche_derive_rave_row)

LB$VISIT= "SCREENING"
check_lb_lbstresu(LB)

LB$LBSTRESU=NULL
check_lb_lbstresu(LB)