Accelerating Best Practices in Peer Support Around the World

Impact of Community Based Peer Support in Type 2 Diabetes: A Cluster RCT of Individual and/or Group Approaches

PLoS One. 2015 Mar 18;10(3):e0120277. [Pubmed Abstract]

Impact of Community Based Peer Support in Type 2 Diabetes: A Cluster Randomised Controlled Trial of Individual and/or Group Approaches
Simmons D, Prevost AT, Bunn C, Holman D, Parker RA, Cohn S, Donald S, Paddison CA, Ward C, Robins P, Graffy J

Diabetes peer support, where one person with diabetes helps guide and support others, has been proposed as a way to improve diabetes management. We have tested whether different diabetes peer support strategies can improve metabolic and/or psychological outcomes.

People with type 2 diabetes (n = 1,299) were invited to participate as either ‘peer’ or ‘peer support facilitator’ (PSF) in a 2×2 factorial randomised cluster controlled trial across rural communities (130 clusters) in England. Peer support was delivered over 8-12 months by trained PSFs, supported by monthly meetings with a diabetes educator. Primary end point was HbA1c. Secondary outcomes included quality of life, diabetes distress, blood pressure, waist, total cholesterol and weight. Outcome assessors and investigators were masked to arm allocation. Main factors were 1:1 or group intervention. Analysis was by intention-to-treat adjusting for baseline.

The 4 arms were well matched (Group n = 330, 1:1(individual) n = 325, combined n = 322, control n = 322); 1035 (79.7%) completed the mid-point postal questionnaire and 1064 (81.9%) had a final HbA1c. A limitation was that although 92.6% PSFs and peers were in telephone contact, only 61.4% of intervention participants attended a face to face session. Mean baseline HbA1c was 57 mmol/mol (7.4%), with no significant change across arms. Follow up systolic blood pressure was 2.3mm Hg (0.6 to 4.0) lower among those allocated group peer-support and 3.0mm Hg (1.1 to 5.0) lower if the group support was attended at least once. There was no impact on other outcomes by intention to treat or significant differences between arms in self-reported adherence or medication.

Group diabetes peer support over 8-12 months was associated with a small improvement in blood pressure but no other significant outcomes. Long term benefits should be investigated.


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