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Study Objectives. To determine characteristics associated with drug adherence and blood pressure control among patients with hypertension, and to assess agreement between self‐reported and refill adherences.

Design. Cross‐sectional analysis of baseline data from an ongoing randomized controlled trial.

Setting. Primary care center at an urban, county health system in Indianapolis, Indiana.

Patients. Four hundred ninety‐two participants with hypertension and taking at least one antihypertensive drug.

Measurements and Main Results. Social and demographic factors, comorbidity, self‐reported drug adherence, prescription refill adherence, and systolic and diastolic blood pressures were recorded at baseline. Participants were aged 57 ± 11 (mean ± SD) years, were predominantly women (73%) and African‐American (68%), and took 2.4 ± 1.1 antihypertensive drugs. Agreement between self‐reported and refill …