. Author manuscript; available in PMC: 2010 May 1.

Published in final edited form as: Med Clin North Am. 2009 May;93(3):753–769. doi: 10.1016/j.mcna.2009.02.007

Table 3.

Associations of Morisky medication adherence scale scores with medication possession ratio and uncontrolled blood pressure in the Cohort Study of Medication Adherence among Older Adults (CoSMO)

	Morisky Medication Adherence Scale score category
	Low (<6)	Medium (6 to <8)	High (8)	p-value
N	291	709	1087	N/A
Non-persistent MPR^ˇ (<0.8)
Prevalence, %	55%	28%	19%	<0.001
Prevalence ratio^* (95% CI)	2.71 (2.31 - 3.18)	1.42 (1.20 - 1.69)	1.00 (ref)	<0.001

N	266	644	998	N/A
Uncontrolled Blood Pressure^{^}
Prevalence, %	38	35	32	0.13
PR (95% CI)^*	1.20 (1.00-1.43)	1.07 (0.93-1.23)	1.00 (ref)	<0.04

^ˇ

Included all participants with pharmacy fill data available for calculation of MPR, n=2087

^{^}

Included all participants with at least 2 blood pressure recordings on different days and used the 2 BP readings closest to the participant survey date to determine uncontrolled BP, N=1908

Uncontrolled BP was defined as mean SBP and DBP ≥140/90 mmHg

PR-prevalence ratio, CI- confidence interval, MPR-medication possession ratio, BP-blood pressure

Adjusted for age, gender and race