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Broad synthesis / Overview of systematic reviews

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Effectiveness of interventions aimed at improving dietary behaviours among people at higher risk of or with chronic non-communicable diseases: an overview of systematic reviews

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Journal European journal of clinical nutrition
Year 2019
Links Pubmed DOI

This article includes 14 Systematic reviews Systematic reviews (14 references)

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Programmes that promote dietary behaviour change for the prevention of chronic disease must include components that are rooted in best practice and associated with effectiveness. The purpose of this overview of systematic reviews was to examine the characteristics and dietary behaviour change outcomes of nutrition interventions among populations with or at risk of non-communicable chronic diseases. Systematic reviews of randomised controlled trials (RCTs) testing dietary behaviour change interventions published between January 2006 and November 2015 were identified via searches in Cochrane Library, PubMed, EMBASE and PsycINFO. Quality of reviews were appraised using AMSTAR. Dietary behaviour change and intervention details were extracted and systematically summarised. Fifteen articles met the inclusion criteria. Dietary behaviour changes in response to nutrition interventions were significant in over half of interventions. Reducing dietary fat and increasing fruits and vegetables were the most common behaviour changes. The characteristics of nutrition interventions and their relationship to effectiveness for dietary behaviour change among chronic disease or at-risk populations were reported inconsistently. However, associative evidence exists to support more frequent contacts and the use of specific behaviour change techniques. No clear relationships were found between effectiveness and intervention setting, mode of delivery or intervention provider, although some population-specific relationships were identified. Interventions that promote long-term maintenance of dietary behaviour changes are lacking in the literature. This comprehensive umbrella review identifies specific characteristics of interventions that are associated with effectiveness in interventions that promote dietary behaviour change among different at-risk populations. In order to maximise outcomes, public health, health promotion and healthcare organisations should consider these results in order to inform the development and improvement of nutrition programmes. © 2018, Springer Nature Limited.

Broad synthesis / Overview of systematic reviews

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Health education for patients with acute coronary syndrome and type 2 diabetes mellitus: an umbrella review of systematic reviews and meta-analyses.

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Authors Liu XL , Shi Y , Willis K , Wu CJ , Johnson M
Journal BMJ open
Year 2017
Links Pubmed DOI PubMed Central

This article includes 48 Systematic reviews Systematic reviews (48 references)

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OBJECTIVES: This umbrella review aimed to identify the current evidence on health education-related interventions for patients with acute coronary syndrome (ACS) or type two diabetes mellitus (T2DM); identify the educational content, delivery methods, intensity, duration and setting required. The purpose was to provide recommendations for educational interventions for high-risk patients with both ACS and T2DM. DESIGN: Umbrella review of systematic reviews and meta-analyses. SETTING: Inpatient and postdischarge settings. PARTICIPANTS: Patients with ACS and T2DM. DATA SOURCES: CINAHL, Cochrane Library, Joanna Briggs Institute, Journals@Ovid, EMBase, Medline, PubMed and Web of Science databases from January 2000 through May 2016. OUTCOMES MEASURES: Clinical outcomes (such as glycated haemoglobin), behavioural outcomes (such as smoking), psychosocial outcomes (such as anxiety) and medical service use. RESULTS: Fifty-one eligible reviews (15 for ACS and 36 for T2DM) consisting of 1324 relevant studies involving 2 88 057 patients (15 papers did not provide the total sample); 30 (58.8%) reviews were rated as high quality. Nurses only and multidisciplinary teams were the most frequent professionals to provide education, and most educational interventions were delivered postdischarge. Face-to-face sessions were the most common delivery formats, and many education sessions were also delivered by telephone or via web contact. The frequency of educational sessions was weekly or monthly, and an average of 3.7 topics was covered per education session. Psychoeducational interventions were generally effective at reducing smoking and admissions for patients with ACS. Culturally appropriate health education, self-management educational interventions, group medical visits and psychoeducational interventions were generally effective for patients with T2DM. CONCLUSIONS: Results indicate that there is a body of current evidence about the efficacy of health education, its content and delivery methods for patients with ACS or T2DM. These results provide recommendations about the content for, and approach to, health education intervention for these high-risk patients.