Seeking a method to reference "expected therapeutic duration." This is an element that provides information specific to dosing schedules. The example schizophrenia measure separates the parenteral medications into long-acting injections 14 day frequency (respiridone), long-acting injections 28 day frequency (aripiprazole, olanzapine) and 30 day frequency (respiridone-perseris). Thus, the measure needs to indicate the frequency in administration events for each of the three "groupings" of parenteral medication.