. Author manuscript; available in PMC: 2009 Dec 1.

Published in final edited form as: Am J Geriatr Pharmacother. 2008 Dec;6(5):255–263. doi: 10.1016/j.amjopharm.2008.11.001

Table 4.

Factors associated with overall assessment of adherence ^*

EXPLANATORY VARIABLES	CATEGORIES	ASSOCIATION WITH OVERALL ADHERENCE
		Univariable analyses			Multivariable analyses
		Linear Regression or GEE			GEE
		OR	95% CI	P	OR	95% CI	P
Hopkins Verbal Learning Test	10^th - 50^th%ile vs. <10^th %ile	2.73	(0.92, 8.12)	0.19	n/a
Hopkins Verbal Learning Test	>50^th %ile vs. <10^th %ile	2.56	(0.91, 7.21)	0.25	n/a
Trailmaking Test B	10^th - 50^th %ile vs. <10^th ile	2.81	(1.06, 7.49)	0.38	3.25	(1.13, 9.33)	0.03
Trailmaking Test B	>50^th %ile^* vs. <10^th %ile	4.02	(1.47, 10.97)	0.03	4.38	(1.22,15.68)	0.02
Number of prescription drugs	> 5 vs. ≤ 5	0.38	(0.18, 0.77)	0.008	0.45	(0.21, 0.95)	0.04
Dosing frequency / day	≥ 4 vs. <4	0.99	(0.99, 1.00)	0.005	0.99	(0.98, 1.00)	0.08
Prescription drug insurance	Present vs. absent	1.22	(0.48, 3.11)	0.68	n/a
Age	Years (continuous)	0.99	(0.94, 1.05)	0.87	1.02	(0.95, 1.09)	0.60
Sex	Male vs. Female	0.92	(0.43, 1.96)	0.83	0.91	(0.41, 2.00)	0.81
Education	≥ hs grad vs. < hs grad	1.43	(0.69, 2.95)	0.33	0.90	(0.39, 2.00)	0.81

Excluding individuals who took their medication under others' supervision.