sdtm_vs.RdVital Signs data frame - One record per vital sign measurement per time point per visit per subject
sdtm_vsa data frame with 29643 rows and 24 columns. See https://github.com/SafetyGraphics/safetyData/blob/main/data-raw/sdtm/README.md for more details and full data specification. Columns:
 STUDYID text - Study Identifier
 DOMAIN text - Domain Abbreviation
 USUBJID text - Unique Subject Identifier
 VSSEQ integer - Sequence Number
 VSTESTCD text - Vital Signs Test Short Name
 VSTEST text - Vital Signs Test Name
 VSPOS text - Vital Signs Position of Subject
 VSORRES text - Result or Finding in Original Units
 VSORRESU text - Original Units
 VSSTRESC text - Character Result/Finding in Std Format
 VSSTRESN integer - Numeric Result/Finding in Standard Units
 VSSTRESU text - Standard Units
 VSSTAT text - Completion Status
 VSLOC text - Location of Vital Signs Measurement
 VSBLFL text - Baseline Flag
 VISITNUM float - Visit Number
 VISIT text - Visit Name
 VISITDY integer - Planned Study Day of Visit
 VSDTC date - Date/Time of Measurements
 VSDY integer - Study Day of Vital Signs
 VSTPT text - Planned Time Point Name
 VSTPTNUM integer - Planned Time Point Number
 VSELTM text - Planned Elapsed Time from Time Point Ref
 VSTPTREF text - Time Point Reference