Dataset Information

Systematic review of control groups in nutrition education intervention research.

ABSTRACT: Well-designed research trials are critical for determining the efficacy and effectiveness of nutrition education interventions. To determine whether behavioral and/or cognition changes can be attributed to an intervention, the experimental design must include a control or comparison condition against which outcomes from the experimental group can be compared. Despite the impact different types of control groups can have on study outcomes, the treatment provided to participants in the control condition has received limited attention in the literature.A systematic review of control groups in nutrition education interventions was conducted to better understand how control conditions are described in peer-reviewed journal articles compared with experimental conditions. To be included in the systematic review, articles had to be indexed in CINAHL, PubMed, PsycINFO, WoS, and/or ERIC and report primary research findings of controlled nutrition education intervention trials conducted in the United States with free-living consumer populations and published in English between January 2005 and December 2015. Key elements extracted during data collection included treatment provided to the experimental and control groups (e.g., overall intervention content, tailoring methods, delivery mode, format, duration, setting, and session descriptions, and procedures for standardizing, fidelity of implementation, and blinding); rationale for control group type selected; sample size and attrition; and theoretical foundation.The search yielded 43 publications; about one-third of these had an inactive control condition, which is considered a weak study design. Nearly two-thirds of reviewed studies had an active control condition considered a stronger research design; however, many failed to report one or more key elements of the intervention, especially for the control condition. None of the experimental and control group treatments were sufficiently detailed to permit replication of the nutrition education interventions studied.Findings advocate for improved intervention study design and more complete reporting of nutrition education interventions.

SUBMITTER: Byrd-Bredbenner C

PROVIDER: S-EPMC5504837 | biostudies-other | 2017 Jul

REPOSITORIES: biostudies-other

ACCESS DATA

Similar Datasets

Project description:This review reports the pork quality attributes, Warner-Bratzler Shear Force, Slice Shear Force, Star Probe, pH, marbling, color (Minolta L*/L or Hunter L*/L), and sensory tenderness evaluation, in control groups used in comparative nutrition experiments over the past 20 yr. The original aim of this study was to evaluate if changes in pork quality based on the above metrics occurred over time. To address this question, it was anticipated that data may come from 3 sources with decreasing relevance: representative retail pork surveys, representative post-harvest carcass surveys, and control groups from comparative nutrition experiments. To identify the study population, a review of studies reported in Centre for Agricultural Biosciences International Abstracts (Web of Knowledge; 1994-2014) was conducted. Two national level surveys of retail pork and 146 relevant nutritional experiments studies, with 228 control groups, were identified by the search. It was not possible to conduct a meta-analysis of the retail pork surveys based on only 2 time points. For the comparative studies, a random effects meta-analysis was conducted with year as a covariate to assess the impact of time on the outcome. In the absence of modifiers, there was no evidence of meaningful change in the mean Warner-Bratzler Shear Force, pH, color, marbling, or sensory scores over the study period. There was evidence of substantial between-study heterogeneity in the characteristics of control pigs used over the years for Warner-Bratzler Shear Force and measures of color. The absence of publicly-available representative surveys of pork quality meant the changes in pork quality over time were not clear. If changes in pork quality have occurred, the data suggest that pigs used as controls in experiments may have become less representative of commercial pigs over time and the translatability of study findings from nutrition experiments might be reduced over time. Alternately, if commercial pigs have not changed, then control pigs reflect this. The study does not address if control groups in other experimental intervention studies had similar tenderness patterns as reported here for nutritional interventions. A large amount of potentially available data was excluded from the analysis due to incomplete reporting in the original study reports.

Project description:ContextFrequent consumption of home-prepared meals is associated with higher diet quality in children and adults. Therefore, increasing the culinary skills of women and couples during their childbearing years may be an effective strategy for the prevention of overweight and obesity.ObjectiveTo determine the impact of culinary nutrition-education interventions for women with or without their partners during preconception, pregnancy, or postpartum (PPP) on parental cooking skills, nutrition knowledge, parent/child diet quality, or health outcomes.Data sourcesEligibility criteria were defined using a PICOS framework. A systematic search strategy was developed to identify eligible studies and was implemented in 11 electronic databases. Reference lists of selected systematic reviews were manually searched for additional studies.Data extractionStudy characteristics and outcomes were extracted from eligible studies by 1 reviewer and checked by a second reviewer.Data analysisA narrative synthesis of the findings of eligible studies was prepared including descriptive statistics. Reporting was guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement and Synthesis Without Meta-Analysis in systematic reviews reporting guideline.ResultsA total of 6951 articles were identified from the search strategy and 31 studies during pregnancy or postpartum were included. By category, the number of studies with a favorable outcome per total number of studies measuring outcome were as follows: parental food/cooking skills (n = 5 of 5), nutrition knowledge (n = 6 of 11), parent/child diet quality (n = 10 of 19), infant feeding (n = 6 of 11), eating behavior (n = 2 of 5), maternal (n = 2 of 5) and child anthropometry (n = 6 of 10), mental health and development n = (2 of 3), and clinical indictors (n = 1 of 1).ConclusionsCulinary nutrition-education interventions during pregnancy and the postpartum period show promise in improving cooking skills, diet quality, and a variety of health-related outcomes. The precise effect of these interventions during PPP is limited by the quality and heterogeneity of study designs to date.Systematic review registrationPROSPERO registration number: CRD42020154966.

Project description:ObjectivesMulti-institutional research increases the generalizability of research findings. However, little is known about characteristics of collaborations across institutions in health sciences education research. Using a systematic review process, the authors describe characteristics of published, peer-reviewed multi-institutional health sciences education research to inform educators who are considering such projects.MethodsTwo medical librarians searched MEDLINE, the Education Resources Information Center (ERIC), EMBASE, and CINAHL databases for English-language studies published between 2004 and 2013 using keyword terms related to multi-institutional systems and health sciences education. Teams of two authors reviewed each study and resolved coding discrepancies through consensus. Collected data points included funding, research network involvement, author characteristics, learner characteristics, and research methods. Data were analyzed using descriptive statistics.ResultsOne hundred eighteen of 310 articles met inclusion criteria. Sixty-three (53%) studies received external and/or internal financial support (87% listed external funding, 37% listed internal funding). Forty-five funded studies involved graduate medical education programs. Twenty (17%) studies involved a research or education network. Eighty-five (89%) publications listed an author with a master's degree or doctoral degree. Ninety-two (78%) studies were descriptive, whereas 26 studies (22%) were experimental. The reported study outcomes were changes in student attitude (38%; n=44), knowledge (26%; n=31), or skill assessment (23%; n=27), as well as patient outcomes (9%; n=11).ConclusionsMulti-institutional descriptive studies reporting knowledge or attitude outcomes are highly published. Our findings indicate that funding resources are not essential to successfully undertake multi-institutional projects. Funded studies were more likely to originate from graduate medical or nursing programs.

Dataset Information

Systematic review of control groups in nutrition education intervention research.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets