Table 4.

Per protocol analyses of the effect of intervention on knowledge of medications.

Medication knowledge	Participants obtaining optimal scorea		Univariable	Multivariabled
	Intervention N (%) (n = 67)	Control N (%) (n = 61)	(OR, 95% CI)	(OR, 95% CI)	P-value
Individual item score (optimal score = 1)b
Name of medication	43 (64.2)	38 (62.3)	1.08 (0.53, 2.23)	1.02 (0.43, 2.39)	0.967
Reasons for administration	38 (56.7)	35 (57.4)	0.97 (0.48, 1.96)	0.83 (0.35, 1.93)	0.659
Mechanism of administration	36 (53.7)	33 (54.1)	0.99 (0.49, 1.98)	1.00 (0.41, 2.45)	0.996
Timing of medication	60 (89.6)	57 (93.4)	0.60 (0.17, 2.17)	0.51 (0.14, 1.91)	0.321
Side effect	7 (10.5)	5 (8.2)	1.31 (0.39, 4.36)	1.47 (0.38, 5.77)	0.579
What to do when
Medication side effects occur	55 (82.1)	47 (77.1)	1.37 (0.58, 3.24)	1.47 (0.57, 3.79)	0.420
Dose of medication is missed	52 (77.6)	52 (85.3)	0.60 (0.24, 1.49)	0.74 (0.27, 2.06)	0.568
Composite scorec
Median (Q1, Q3)	5.5 (3.5, 6.0)	5.0 (3.7, 6.7)	1.02 (0.59, 1.78)	1.01 (0.38, 2.71)e	0.980
Optimal (≥5)	43 (64.2)	37 (60.7)	1.16 (0.57, 2.38)	0.87 (0.54, 1.40)	0.566

^aAnalyses were restricted to 128 patients who were taking medications at 12 months.

^bItem score was calculated as the sum of scores for an item divided by the number of medications assessed.

^cComposite score was calculated as the sum of scores for all items divided by the number of categories of medications used.

^dAdjusted for type of stroke, medical history, demographic, socioeconomic, mental and functional status, number of prescribed prevention medications, length of use of prevention medications, method by which medications are packaged/provided by pharmacist, and self-reported method(s) of keeping track of medications.

^eExponentiated coefficient obtained from the stepwise multivariable linear regression analyses.

OR, odds ratio; CI, confidence interval.