DEFINITION : The Medical History (MH) domain contains information about the subject’s medical history prior to the study, such as chronic illnesses or past surgeries, that could influence the study outcomes

PURPOSE : To capture pre-existing conditions or past medical events that may impact the analysis of study results. 

STRUCTURE : One record per medical history event per subject

TOPIC : MHTERM

KEY VARIABLES : STUDYID, USUBJID, MHDECOD