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Patient-based outcome results from a cluster randomized trial of shared decision making skill development and use of risk communication aids in general practice

Edwards, Adrian G. ORCID: https://orcid.org/0000-0002-6228-4446, Elwyn, Glyn ORCID: https://orcid.org/0000-0002-0917-6286, Hood, Kerenza ORCID: https://orcid.org/0000-0002-5268-8631, Atwell, Christine Leander Angela, Robling, Michael Richard ORCID: https://orcid.org/0000-0002-1004-036X, Houston, Helen Louise Ann, Kinnersley, Paul Richard and Russell, Ian 2004. Patient-based outcome results from a cluster randomized trial of shared decision making skill development and use of risk communication aids in general practice. Family Practice 21 (4) , pp. 347-354. 10.1093/fampra/cmh402

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Abstract

BACKGROUND: Shared decision-making (SDM) between professionals and patients is increasingly advocated from ethical principles. Some data are accruing about the effects of such approaches on health or other patient-based outcomes. These effects often vary substantially between studies. OBJECTIVE: Our aim was to evaluate the effects of training GPs in SDM, and the use of simple risk communication aids in general practice, on patient-based outcomes. METHODS: A cluster randomized trial with crossover was carried out with the participation of 20 recently qualified GPs in urban and rural general practices in Gwent, South Wales. A total of 747 patients with known atrial fibrillation, prostatism, menorrhagia or menopausal symptoms were invited to a consultation to review their condition or treatments. After baseline, participating doctors were randomized to receive training in (i) SDM skills; or (ii) the use of simple risk communication aids, using simulated patients. The alternative training was then provided for the final study phase. Patients were randomly allocated to a consultation during baseline or intervention 1 (SDM or risk communication aids) or intervention 2 phases. A randomly selected half of the consultations took place in 'research clinics' to evaluate the effects of more time for consultations, compared with usual surgery time. Patient-based outcomes were assessed at exit from consultation and 1 month follow-up. These were: COMRADE instrument (principal measures; subscales of risk communication and confidence in decision), and a range of secondary measures (anxiety, patient enablement, intention to adhere to chosen treatment, satisfaction with decision, support in decision making and SF-12 health status measure). Multilevel modelling was carried out with outcome score as the dependent variable, and follow-up point (i.e. exit or 1 month later for each patient), patient and doctor levels of explanatory variables. RESULTS: No statistically significant changes in patient-based outcomes due to the training interventions were found: COMRADE risk communication score increased 0.7 [95% confidence interval (CI) -0.92 to 2.32] after risk communication training and 0.9 (95% CI -0.89 to 2.35) after SDM training; and COMRADE satisfaction with communication score increased by 1.0 (95% CI -1.1 to 3.1) after risk communication, and decreased by 0.6 (95% CI 2.7 to -1.5) after SDM training. Patients' confidence in the decision (2.1 increase, 95% CI 0.7-3.5, P < 0.01) and expectation to adhere to chosen treatments (0.7 increase, 95% CI 0.04-1.36, P < 0.05) were significantly greater among patients seen in the research clinics (when more time was available) compared with usual surgery time. Most outcomes deteriorated between exit and 1 month later. There was no interaction between intervention effects. CONCLUSION: Patients can be more involved in treatment decisions, and risks and benefits of treatment options can be explained in more detail, without adversely affecting patient-based outcomes. SDM and risk communication may be advocated from values and ethical principles even without evidence of health gain or improvement in patient-based outcomes, but the resources required to enhance these professional skills must also be taken into consideration. These data also indicate the benefits of extra consultation time.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Uncontrolled Keywords: Primary care ; randomized trial ; risk communication ; shared decision making
Publisher: Oxford University Press
ISSN: 1460-2229
Last Modified: 01 Dec 2022 09:46
URI: https://orca.cardiff.ac.uk/id/eprint/532

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