DEFINITION :  The Procedures (PR) domain records details of any medical,surgical, or diagnostic procedures that subjects undergo during the study. This can include anything from blood draws to surgical interventions.

PURPOSE : To track and document all medical procedures performed on the subjects during the trial, which may affect outcomes or safety evaluations.

STRUCTURE : One record per recorded procedure per occurrence per subject.

TOPIC : PRTRT

KEY VARIABLES : STUDYID, USUBJID, PRTRT, PRSTDTC