TABLE 3.

Comparison of MPRs and PDCs in Studies Comparing Mail and Retail Pharmacies.

Disease State	Group	Differences
		Mail-Order Group (%)	Retail Group (%)	Difference (% points)
Asthma	Visaria et al.20,a	62.4	39.7	22.7b
	Khandelwal et al.15,a	68.1	67.2	0.9
Hypertension	Khandelwal et al.15,a	79.0	79.0	0.0
	Duru et al.27,c	88.1	80.4	7.7b
Cholesterol	White et el.25,a	92.6	82.5	10.1b
	Khandelwal et al.15,a	77.6	76.7	0.9
	Duru et al.27,c	81.7	72.4	9.3b
Diabetes	Duru et al.27,c	81.8	75.2	6.6b
	Devine et al.29,a,d	84.8	63.4	21.4b
	Zhang et al.30,a	68.0	61.0	7.0b
	Khandelwal et al.15,a	83.1	80.2	2.9
	Sharma et al.31,e	Not reported	Not reported	8.6
Depression	Khandelwal et al.15,a	72.3	71.5	0.8
CHF, CAD	Khandelwal et al.15,a	77.3	78.9	1.6
Thyroid	Khandelwal et al.15,a	80.2	80.8	0.6
Other diseases
Diuretics	Khandelwal et al.15,a	75.4	73.9	1.5
Calcium channel blockers	Khandelwal et al.15,a	78.9	79.3	0.4

^a Medication possession ratio.

^b Statistically significant.

^c Continuous measure of medication gaps (percentages of patients who were adherent, CMG ≤ 20%).

^d Patients switched groups.

^e Proportion of days covered.

CAD = coronary artery disease; CHF = congestive heart failure; CMG = continuous measure of medication gaps; MPR = medication possession ratio; PDC = proportion of days covered.