Table II.

Prescription-filling behavior during calendar year 2005 in a study assessing pharmacy loyalty and predictors of using multiple pharmacies among patients enrolled in the Pharmaceutical Assistance Contract for the Elderly (PACE) pharmacy benefit program and those whose primary pharmacy was among the top 5 pharmacies in Pennsylvania.

	All PACE patients (N = 182,116)		PACE enrollees whose primary pharmacy was in the top 5 pharmacies in Pennsylvania(N = 75,413)
	Mean (SD)	Median (IQR)	Mean (SD)	Median (IQR)
Unique pharmacy locations where prescriptions were filled, no.	1.3 (0.6)	1 (1–1)	1.3 (0.6)	1 (1–1)
Unique medications used, no.	9.8 (5.5)	9 (6–13)	9.5 (5.3)	9 (6–12)
Prescriptions filled, no.	59.3 (33.1)	54 (35–78)	57.4 (31.6)	52 (34–76)
Prescriptions filled at the primary pharmacy, no.	57.0 (32.4) (96.1%)	52 (33–76)	55.3 (31.2) (96.3%)	50 (32–74)
Residing in an urban zip code, no.	55.2 (31.7) (93.1%)	50 (31–73)	53.4 (30.3) (93.0%)	48 (30–71)
Residing in a rural zip code, no.	58.3 (32.8) (98.3%)	53 (34–77)	57.1 (31.9) (99.5%)	52 (33–76)
Prescriptions filled at a nonprimary pharmacy, no.	2.3 (7.8)	0 (0–0)	2.2 (7.3)	0 (0–0)
Prescriptions filled within the same pharmacy chain, no.	–	–	55.9 (31.3) (97.4%)	51 (32–74)
Antibiotic prescriptions filled, no.	0.5 (1.1)	0 (0–1)	0.4 (1.1)	0 (0–1)
Antibiotic prescriptions filled at the primary pharmacy, no.	0.4 (1.1)	0 (0–0)	0.4 (1.1)	0 (0–0)

IQR = interquartile range.