RNSystematic ReviewInternational journal of nursing sciences2019

Interventions for self-management of type 2 diabetes: An integrative review.

Roger Carpenter, Toni DiChiacchio, Kendra Barker

PMID 31406872

WHAT IT FOUND

Education, coaching, technology, problem solving, mindfulness and cognitive behavioural therapy for type 2 diabetes often produced small short-term gains in HbA1c, self-efficacy or distress.

Effects were inconsistent, and no single approach clearly worked best.

Key findings

01Across the reviewed interventions, effects were mixed, with small to modest improvements in HbA1c, weight loss, diet, physical activity, self-efficacy and distress; reported HbA1c reductions ranged from 0.13% to 1.6%.

02Smartphone and app-based diabetes self-management interventions showed modest HbA1c reductions in pooled reviews: 0.40%, 0.49%, 0.51%, and -0.50% for mobile phone-based interventions.

03Diabetes self-management education produced inconsistent but often modest glycemic benefit: in 118 RCTs, 61.9% reported significant HbA1c change with average reduction 0.57%, and meta-analyses described benefits as modest and declining over time.

STILL TO COME

How it was doneWhat they foundWhat it means for RNs

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What it does not show

The review combined many intervention types, lengths, delivery methods and facilitators, so findings cannot be compared as if the interventions were the same. Many programmes were multi-modal, including education, coaching, technology or lifestyle components together, so the effect of any single component cannot be separated. Only 21 of 59 studies, or 35.5%, addressed intervention fidelity. Most diet, physical activity, self-efficacy and distress outcomes were self-reported, which may overstate behaviour change. Follow-up was mostly at 6 or 12 months, and some positive effects did not persist, so long-term maintenance is uncertain. The search was limited to English-language peer-reviewed quantitative studies of adults, so non-English or qualitative evidence may be missing. Because systematic reviews, meta-analyses and primary studies were included together, some findings may be duplicated. Attrition was reported inconsistently; five studies did not report attrition.

Declared interests

The authors reported that this research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

The easy way to misread this

Do not read this review as proof that diabetes self-management education, apps, coaching, problem solving, mindfulness or cognitive behavioural therapy reliably improves long-term blood sugar control. Many studies showed only small, short-term or within-group HbA1c changes, effects were inconsistent, and interventions often combined several components so one part cannot be credited.

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