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Naik AD, Kallen MA, Walder A, Street RL. Improving hypertension control in diabetes mellitus: the effects of collaborative and proactive health communication. Circulation. 2008 Mar 18; 117(11):1361-8.
BACKGROUND: Communication between patients and clinicians using collaborative goals and treatment plans may overcome barriers to achieving hypertension control in routine diabetes mellitus care. We assessed the interrelation of patient-clinician communication factors to determine their independent associations with hypertension control in diabetes care. METHODS AND RESULTS: We identified 566 older adults with diabetes mellitus and hypertension at the DeBakey VA Medical Center in Houston, Tex. Clinical and pharmacy data were collected, and a patient questionnaire was sent to all participants. A total of 212 individuals returned surveys. Logistic regression analyses were performed to assess the effect of patient characteristics, self-management behaviors, and communication factors on hypertension control. Three communication factors had significant associations with hypertension control. Two factors, patients' endorsement of a shared decision-making style (odds ratio 1.61, 95% confidence interval 1.01 to 2.57) and proactive communication with one's clinician about abnormal results of blood pressure self-monitoring (odds ratio 1.89, 95% confidence interval 1.10 to 3.26), had direct, independent associations in multivariate regression. Path analysis was used to investigate the direct and indirect effects of communication factors and hypertension control. Decision-making style (beta = 0.20, P < 0.01) and proactive communication (beta = 0.50, P < 0.0001) again demonstrated direct effects on hypertension control. A third factor, clinicians' use of collaborative communication when setting treatment goals, had a total effect on hypertension control of 0.16 (P < 0.05) through its direct effects on decision-making style (beta = 0.28, P < 0.001) and proactive communication (beta = 0.22, P < 0.01). CONCLUSIONS: Three communication factors were found to have significant associations with hypertension control. Patient-clinician communication that facilitates collaborative blood pressure goals and patients' input related to the progress of treatment may improve rates of hypertension control in diabetes care independent of medication adherence.