Carswell, Claire, Taylor, Jo, Holt, Richard I.G., Brown, Jennifer V.E., Ajjan, Ramzi, Böhnke, Jan R., Doran, Tim, Kellar, Ian, Shiers, David, Wright, Judy and Siddiqi, Najma (2024) A core outcome set for trials evaluating self-management interventions in people with severe mental illness and coexisting type 2 diabetes. Diabetic Medicine. (In Press)
Abstract
Background: people with severe mental illness (SMI), such as schizophrenia, have higher rates of type 2 diabetes and worse outcomes, compared to those without SMI, and it is not known whether diabetes self-management interventions are effective for people who have both conditions. Research in this area has been impeded by a lack of consensus on which outcomes to prioritise in people with co-existing SMI and diabetes.
Aims: to develop a core outcome set (COS) for use in effectiveness trials of diabetes self-management interventions in adults with both type 2 diabetes and SMI.
Methods: the COS was developed in three stages: i) identification of outcomes from systematic literature review of intervention studies, followed by multi-stakeholder and service user workshops; ii) rating of outcomes in a two-round online Delphi survey; iii) agreement of final ‘core’ outcomes through a stakeholder consensus workshop.
Results: seven outcomes were selected: glucose control, blood pressure, body composition (body weight, BMI, body fat), health-related quality of life, diabetes self-management, diabetes-related distress, and medication adherence.
Conclusions: this COS is recommended for future trials of effectiveness of diabetes self-management interventions for people with SMI and type 2 diabetes. Its use will ensure trials capture important outcomes and reduce heterogeneity so findings can be readily synthesised to inform practice and policy.
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