Effect of the statin choice encounter decision aid in Spanish patients with type 2 diabetes: A randomized trial

Patient Educ Couns. 2016 Feb;99(2):295-9. doi: 10.1016/j.pec.2015.08.032. Epub 2015 Sep 1.


Objective: Statin choice, an encounter decision aid (DA), was developed in the USA to facilitate shared decision making between patients and clinicians about the use of statins to reduce cardiovascular risk. We aimed to assess the efficacy of this DA, compared to usual primary care, in Spanish patients with type 2 diabetes.

Methods: Cluster randomized trial with 29 clinicians and 168 patients. Knowledge of statins, cardiovascular risk perception, decisional conflict, anxiety and satisfaction with the decision making process were assessed immediately after intervention, and self-reported adherence at three months.

Results: Intervention significantly improved knowledge (p=0.01), perception of the 10-year risk of myocardial infarction without (p=0.01) and with statins (p=0.08), and satisfaction (p=0.01). There were no significant differences in decisional conflict, anxiety, consultation time or adherence, although more intervention patients reported taking all pills during the last week (92.7% vs. 81%; p=0.19).

Conclusion: The statin choice DA improved the quality of decision making about statins.

Practice implications: This trial contributes to the body of evidence substantiating the efficacy of statin choice and extending it to Spanish clinicians and their patients with type 2 diabetes.

Trial registration: This trial is registered with the European Union Clinical Trials Register (EudraCT: 2010-023912-14).

Keywords: Cardiovascular risk; Communication; Decision aid; Patient involvement (empowerment; Randomized controlled trial; Shared decision making; Spain; Statin choice; Type 2 diabetes; self-management).

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Cardiovascular Diseases / drug therapy
  • Cardiovascular Diseases / etiology
  • Cardiovascular Diseases / prevention & control*
  • Choice Behavior*
  • Cluster Analysis
  • Decision Making*
  • Decision Support Techniques*
  • Diabetes Mellitus, Type 2 / complications
  • Diabetes Mellitus, Type 2 / drug therapy
  • Diabetes Mellitus, Type 2 / psychology*
  • Female
  • Humans
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors / therapeutic use*
  • Male
  • Medication Adherence
  • Outcome Assessment, Health Care
  • Patient Participation / psychology*
  • Patient-Centered Care / methods
  • Primary Health Care
  • Professional-Patient Relations
  • Spain
  • Treatment Outcome


  • Hydroxymethylglutaryl-CoA Reductase Inhibitors

Associated data

  • EudraCT/2010-023912-14