clinical measurement Primary Outcome Measure Primary Outcome Measure Intellectual Product Primary Outcome Measure The outcome measure(s) of greatest importance specified in the protocol, usually the one(s) used in the power calculation, to evaluate the primary endpoint(s) associated with the primary study objective(s). (After Clinicaltrials.gov) PRIMARY OUTCOME MEASURE C98772 CDISC OUTMSPRI C3274433 The primary measurement(s) or observation(s) used to measure the effect of experimental variables in a study, or for observational studies, to describe patterns of diseases or traits or associations with exposures, risk factors or treatment. These are the outcome measures used to assess the primary objective(s).