A health plan’s choice of structure measures, process measures, and outcome measures to evaluate performance...

identification and removal of unusual cases, such as patients with contraindications to a particular treatment, from consideration

statistical adjustment of outcome measures to account for differences in the severity of illness or the presence of other medical conditions

specification of a target population for a procedure and the data collection and analysis methods to be used

elimination of variation within a patient population by dividing the population into groups that are at a similar level of risk