Evidence generated from a realist synthesis of trials on educational weight loss interventions in type 2 diabetes mellitus.
Journal
Diabetic medicine : a journal of the British Diabetic Association
ISSN: 1464-5491
Titre abrégé: Diabet Med
Pays: England
ID NLM: 8500858
Informations de publication
Date de publication:
01 2021
01 2021
Historique:
received:
09
03
2020
revised:
29
07
2020
accepted:
25
08
2020
pubmed:
2
9
2020
medline:
31
12
2021
entrez:
2
9
2020
Statut:
ppublish
Résumé
Obesity and diabetes are major public health problems. Current approaches to weight loss show varying success. Complex community-based interventions work through several interconnected stages. An individual's actions in response to an intervention depend on many known and unknown factors, which vary among individuals. To conduct a realist synthesis to identify in which context, for whom, in what circumstances, and how weight loss interventions work in obese or overweight individuals with type 2 diabetes. A total of 49 trials identified during a systematic review were subsequently analysed using realist methodology. This iterative process involved hypothesis generation about how participants within a particular context respond to an intervention's resources producing the outcomes. We used established behaviour change theory to look for repeating themes. Theory and 'mechanisms' were tested against the literature on what is shown to be effective. Where established theory was lacking, we discussed issues during discussion groups with individuals living with the condition to generate our own programme theories. Mechanisms that were repeatedly identified included high-frequency contact with those delivering the intervention, social support, education increasing awareness of diabetes-related modifiable risk factors, motivational interviewing and counselling, goal-setting, self-monitoring and feedback and meal replacements. The central theme underlying successful mechanisms was personalising each intervention component to the participants' gender, culture and family setting. This is the first comprehensive realist synthesis in this field. Our findings suggest that, for weight loss interventions to be successful in those with diabetes, they must be personalized to the individual and their specific context.
Sections du résumé
BACKGROUND
Obesity and diabetes are major public health problems. Current approaches to weight loss show varying success. Complex community-based interventions work through several interconnected stages. An individual's actions in response to an intervention depend on many known and unknown factors, which vary among individuals.
AIM
To conduct a realist synthesis to identify in which context, for whom, in what circumstances, and how weight loss interventions work in obese or overweight individuals with type 2 diabetes.
METHODS
A total of 49 trials identified during a systematic review were subsequently analysed using realist methodology. This iterative process involved hypothesis generation about how participants within a particular context respond to an intervention's resources producing the outcomes. We used established behaviour change theory to look for repeating themes. Theory and 'mechanisms' were tested against the literature on what is shown to be effective. Where established theory was lacking, we discussed issues during discussion groups with individuals living with the condition to generate our own programme theories.
RESULTS
Mechanisms that were repeatedly identified included high-frequency contact with those delivering the intervention, social support, education increasing awareness of diabetes-related modifiable risk factors, motivational interviewing and counselling, goal-setting, self-monitoring and feedback and meal replacements. The central theme underlying successful mechanisms was personalising each intervention component to the participants' gender, culture and family setting.
CONCLUSION
This is the first comprehensive realist synthesis in this field. Our findings suggest that, for weight loss interventions to be successful in those with diabetes, they must be personalized to the individual and their specific context.
Types de publication
Journal Article
Meta-Analysis
Research Support, Non-U.S. Gov't
Systematic Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
e14394Informations de copyright
© 2020 The Authors. Diabetic Medicine published by John Wiley & Sons Ltd on behalf of Diabetes UK.
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