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The Impact of Health Literacy on Desire for Participation in Healthcare, Medical Visit Communication, and Patient Reported Outcomes among Patients with Hypertension

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ABSTRACT

BACKGROUND

Low health literacy (HL) is associated with poor healthcare outcomes; mechanisms for these associations remain unclear.

OBJECTIVE

To elucidate how HL influences patients’ interest in participating in healthcare, medical visit communication, and patient reported visit outcomes.

DESIGN, SETTING, AND PATIENTS

Cross-sectional study of enrollment data from a randomized controlled trial of interventions to improve patient adherence to hypertension treatments. Participants were 41 primary care physicians and 275 of their patients. Prior to the enrollment visit, physicians received a minimal intervention or communication skills training and patients received a minimal intervention or a pre-visit coaching session. This resulted in four intervention groups (minimal patient/minimal physician; minimal patient/intensive physician; intensive patient/minimal physician; and intensive patient/intensive physician).

MEASUREMENTS

Rapid Estimate of Adult Literacy in Medicine; patients’ desire for involvement in decision making; communication behaviors; patient ratings of participatory decision making (PDM), trust, and satisfaction.

RESULTS

A lower percentage of patients with low versus adequate literacy had controlled blood pressure. Both groups were similarly interested in participating in medical decision making. Communication behaviors did not differ based on HL except for medical question asking by patients, which was lower among low literacy patients. This was particularly true in the intensive patient /intensive physician group (3.85 vs. 6.42 questions; p = 0.002). Overall, ratings of care didn’t differ based on HL; however, in analyses stratified by intervention assignment, patients with low literacy in minimal physician intervention groups reported significantly lower PDM scores than adequate literacy patients.

CONCLUSIONS

Patients with low and adequate literacy were similarly interested in participating in medical decision making. However, low literacy patients were less likely to experience PDM in their visits. Low literacy patients in the intensive physician intervention groups asked fewer medical questions. Patients with low literacy may be less able to respond to physicians’ use of patient-centered communication approaches than adequate literacy patients.

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Acknowledgements

This work was supported by grants from the National Heart, Lung, and Blood Institute (R01HL069403, K24HL083113, and P50HL105187).

Conflict of Interest

Dr. Aboumatar has no conflict of interest. Ms. Karson has received grant support from Gilead Sciences for a pulmonary research grant. Dr. Roter is the author of the Roter Interaction Analysis System (RIAS) and holds the copyright for the system. Johns Hopkins University also has rights to the RIAS coding software. Neither Debra Roter nor Johns Hopkins collects royalties for use of the system in research. Dr. Roter is also the co-owner of RIASWorks LLC, a company that provides RIAS coding services for non-university projects. It is possible that RIASWorks would benefit indirectly from dissemination of the current research. Dr. Beach has received honoraria from Merck for giving non-product based presentations on doctor-patient communication and relationship-centered care. Dr. Cooper has served as consultant for Talaria, Inc. Training, Research, & Healthcare Education in August 2010.

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Correspondence to Hanan J. Aboumatar MD, MPH.

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Aboumatar, H.J., Carson, K.A., Beach, M.C. et al. The Impact of Health Literacy on Desire for Participation in Healthcare, Medical Visit Communication, and Patient Reported Outcomes among Patients with Hypertension. J GEN INTERN MED 28, 1469–1476 (2013). https://doi.org/10.1007/s11606-013-2466-5

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