TABLE 2.

Results of Logistic Regression Model to Assess Influential Factors Associated with Adherence Using the Strict Definition

	OR (95% CI)	P Value
Treatment group		< 0.0001
Single-pill group	1
Dual-combination + a third agent group	0.177 (0.119-0.263)
Free-combination group	1.822 (0.671-4.948)
Age	1.012 (1.007-1.017)	< 0.0001
Gender		< 0.0001
Female	1
Male	1.293 (1.173-1.425)
Language		0.0001
English	1
Spanish	0.762 (0.658-0.882)
CMS risk score	1.035 (0.994-1.076)	0.0926
Health plan		0.4552
LIS	1
Other	1.037 (0.943-1.140)
Previous hospitalization	0.700 (0.554-0.885)	0.0028
Diabetes	0.597 (0.518-0.687)	< 0.0001
Depression	0.432 (0.308-0.605)	< 0.0001
Heart failure	0.799 (0.610-1.045)	0.1018
End-stage renal disease	0.954 (0.599-1.518)	0.8413
Myocardial infarction	1.299 (0.734-2.299)	0.3699
Coronary artery disease	0.505 (0.386-0.660)	< 0.0001
Peripheral vascular disease	0.573 (0.378-0.869)	0.0088
Neuropathy	1.107 (0.784-1.563)	0.5630
COPD	0.696 (0.552-0.878)	0.0022
Retinopathy	1.527 (0.880-2.650)	0.1321
Obesity	0.684 (0.459-1.018)	0.0612
Stroke	0.550 (0.385-0.785)	0.0010
Hyperlipidemia	0.747 (0.634-0.880)	0.0005
Dementia	0.368 (0.155-0.874)	0.0234
Previous antihypertensive drug use		0.1432
No treatment	1
Monotherapy	0.713 (0.152-3.346)
Dual therapy	1.762 (0.525-5.916)

Note: Group differences assessed using logistic regression.

^aSignificant results.

CI = confidence interval; COPD = chronic obstructive pulmonary disease; LIS = low-income subsidy; OR = odds ratio; SD = standard deviation.