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Effect of clinical inertia and trial participation in younger and older adults with diabetes having comorbidities and progressive complications.

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AIM Clinical inertia is a multifactorial phenomenon, with contributing factors from people with diabetes and their healthcare team. It is widely cited that clinical inertia is minimised by participation in… Click to show full abstract

AIM Clinical inertia is a multifactorial phenomenon, with contributing factors from people with diabetes and their healthcare team. It is widely cited that clinical inertia is minimised by participation in clinical trials. We assessed whether trial participation per se improves metabolic parameters in people with diabetes, or a specific focus on glycaemia is required. METHODS We compared improvement in glycaemic control in a pooled set of people assigned to the "placebo" arm from 25 glycaemia-focused trials with a pooled group of people with diabetes allocated to sham or non-pharmacological intervention for the treatment of diabetic retinal disease. Mean change in HbA1c (ANCOVA) was evaluated. RESULTS The overall placebo effect in studies focused on glucose control (N=3081) was comparable between strata groups with and without complications. Adjusted least square mean change in HbA1c at 24 weeks was between -0.23% (-2.50 mmol/mol) and -0.32% (-3.50 mmol/mol). In studies focused on retinal disease (N=288), the change from baseline in HbA1c was +0.10% (1.10 mmol/mol) and fasting plasma glucose was +0.50 mmol/L showing no improvement in metabolic parameters at 12months. CONCLUSIONS Clinical trial participation alone does not seem to improve metabolic parameters in people living with diabetes. The benefits observed in glycaemia-focused studies were independent of age and comorbidities.

Keywords: trial participation; clinical inertia; participation; effect

Journal Title: Diabetes research and clinical practice
Year Published: 2020

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