TABLE 1.

Study Population Demographics

	Cohort 1	Cohort 2	Cohort 3
Randomized members, n	2,197	2,197	2,197
Age, years, average (range)	79.8 (66-105)	80 (66-104)	80 (66-105)
Medicare low-income subsidy eligible,a n (%)	547 (24.89)	549 (24.99)	570 (25.94)
Female, %	100.00	100.00	100.00
Number of unique providers targeted for intervention, n	2,101	2,111	2,076
Number of randomized members continuously enrolled during study period, n	1,833	1,832	1,841

^a Individuals with income less than 150% of the federal poverty level based on criteria set by the health plan and the Centers for Medicare & Medicaid Services Prescription Drug Benefit Manual.¹⁹