PT  - JOURNAL ARTICLE
AU  - Richard G Thomson
AU  - Martin P Eccles
AU  - I Nick Steen
AU  - Jane Greenaway
AU  - Lynne Stobbart
AU  - Madeleine J Murtagh
AU  - Carl R May
TI  - A patient decision aid to support shared decision-making on anti-thrombotic treatment of patients with atrial fibrillation: randomised controlled trial
AID  - 10.1136/qshc.2006.018481
DP  - 2007 Jun 01
TA  - Quality and Safety in Health Care
PG  - 216--223
VI  - 16
IP  - 3
4099  - http://qualitysafety.bmj.com/content/16/3/216.short
4100  - http://qualitysafety.bmj.com/content/16/3/216.full
SO  - Qual Saf Health Care2007 Jun 01; 16
AB  - Objective: To determine the efficacy of a computerised decision aid in patients with atrial fibrillation making decisions on whether to take warfarin or aspirin therapy. Design: Two-armed open exploratory randomised controlled trial. Setting: Two research clinics deriving participants from general practices in Northeast England. Participants: 109 patients with atrial fibrillation aged over 60. Interventions: Computerised decision aid applied in shared decision-making clinic compared to evidence-based paper guidelines applied as direct advice. Main outcome measures: Primary outcome measure was the decision conflict scale. Secondary outcome measures included anxiety, knowledge, decision-making preference, treatment decision, use of primary and secondary care services and health outcomes. Results: Decision conflict was lower in the computerised decision aid group immediately after the clinic; mean difference −0.18 (95% CI −0.34 to −0.01). Participants in this group not already on warfarin were much less likely to start warfarin than those in the guidelines arm (4/16, 25% compared to the guidelines group 15/16, 93.8%, RR 0.27, 95% CI 0.11 to 0.63). Conclusions: Decision conflict was lower immediately following the use of a computerised decision aid in a shared decision-making consultation than immediately following direct doctor-led advice based on paper guidelines. Furthermore, participants in the computerised decision aid group were significantly much less likely to start warfarin than those in the guidelines arm. The results show that such an approach has a positive impact on decision conflict comparable to other studies of decision aids, but also reduces the uptake of a clinically effective treatment that may have important implications for health outcomes.