scholarly journals Reproducibility and Validity of A Posteriori Dietary Patterns: A Systematic Review

2019 ◽  
Author(s):  
Valeria Edefonti ◽  
Roberta De Vito ◽  
Michela Dalmartello ◽  
Linia Patel ◽  
Andrea Salvatori ◽  
...  
Keyword(s):  
Systematic Review ◽  
Factor Analysis ◽  
Construct Validity ◽  
Dietary Patterns ◽  
Research Question ◽  
A Posteriori ◽  
Food Groups ◽  
Relative Validity ◽  
Pubmed Database ◽  
Statistical Solutions

ABSTRACT The effective use of dietary patterns (DPs) remains limited. There is a need to assess their consistency over multiple administrations of the same dietary source, different dietary sources, or across different studies. Similarly, their generalizability should be based on a previous assessment of DP construct validity. However, to date, no systematic reviews of reproducibility and validity of a posteriori DPs have been carried out. In addition, several methodological questions related to their identification are still open and prevent a fair comparison of epidemiological results on DPs and disease. A systematic review of the literature on the PubMed database was conducted. We identified 218 articles, 64 of which met the inclusion criteria. Of these, the 38 articles dealing with reproducibility and relative and construct validity of DPs were included. These articles (published in 1999–2017, 53% from 2010 onwards) were based on observational studies conducted worldwide. The 14 articles that assessed DP reproducibility across different statistical solutions examined different research questions. Included were: the number of food groups or subjects; input variable format (as well as adjustment for energy intake); algorithms and the number of DPs to retain in cluster analysis; rotation method; and score calculation in factor analysis. However, we identified at most 3 articles per research question on DP reproducibility across statistical solutions. From another 15 articles, reproducibility of DPs over shorter (≤1 y) time periods was generally good and higher than DP relative validity (as measured across different dietary sources). Confirmatory factor analysis was used in 15 of the included articles. It provided reassuring results in identifying valid dietary constructs characterizing the populations under consideration. Based on the available evidence, only suggestive conclusions can be derived on reproducibility across different statistical solutions. Nevertheless, most identified DPs showed good reproducibility, fair relative validity, and good construct validity.

scholarly journals Validity of dietary patterns to assess nutrient intake adequacy

2009 ◽  
Vol 101 (S2) ◽  
pp. S12-S20 ◽  
Author(s):  
Blanca Román-Viñas ◽  
Lourdes Ribas Barba ◽  
Joy Ngo ◽  
Miguel Ángel Martínez-González ◽  
Trudy M. A. Wijnhoven ◽  
...  
Keyword(s):  
Systematic Review ◽  
Factor Analysis ◽  
Folic Acid ◽  
Vitamin C ◽  
Dietary Patterns ◽  
Nutrient Intake ◽  
A Priori ◽  
Vitamin B ◽  
A Posteriori ◽  
Β Carotene

The purpose of the present study was to conduct a systematic review of the literature on the value of the methods used to assess dietary patterns for measuring nutrient intake adequacy in the population. Systematic review on Pubmed database up to April 2008. The search included specific key words and MeSH terms. No language limit was set. Only studies that compared food patterns with nutrient intake adequacy or nutrient biomarkers were included in the analysis. The search resulted in 1504 articles. The inclusion and exclusion criteria limited the selection to thirty articles. Nineteen studies evaluated the usefulness of the dietary patterns, eithera prioridefined (thirteen studies), or defined by factor analysis (four studies) or by cluster analysis (two studies), but only nine of them tested their validity (foura prioridefined and foura posterioridefined). Diet indices showed moderate to good validity results for measuring the adequacy of intakes for α-carotene, β-carotene, vitamin C, vitamin B6, Ca, folic acid, Fe and Mg. The factor analysis approach showed moderate to good validity correlations with the adequacy of intake of α-carotene, β-carotene, lutein, lycopene, vitamin C, vitamin B6and folic acid. Vitamin B12and vitamin E are the micronutrients with less probability of being adequately assessed with dietary patternsa prioriora posterioridefined. Diet indices are tools with fair to moderate validity to assess micronutrient intake adequacy.

scholarly journals Relative validity of dietary patterns derived from a self-administered diet history questionnaire using factor analysis among Japanese adults

2010 ◽  
Vol 13 (7) ◽  
pp. 1080-1089 ◽  
Author(s):  
Hitomi Okubo ◽  
Kentaro Murakami ◽  
Satoshi Sasaki ◽  
Mi Kyung Kim ◽  
Naoko Hirota ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Dietary Patterns ◽  
Pearson Correlation ◽  
Dietary Assessment ◽  
Correlation Coefficients ◽  
Food Groups ◽  
Relative Validity ◽  
Japanese Adults ◽  
Diet History Questionnaire ◽  
Diet History

AbstractObjectiveAlthough dietary pattern approaches derived from dietary assessment questionnaires are widely used, only a few studies in Western countries have reported the validity of this approach. We examined the relative validity of dietary patterns derived from a self-administered diet history questionnaire (DHQ) among Japanese adults.DesignThe DHQ, assessing diet during the preceding month, and 4 d dietary records (DR) were collected in each season over one year. To derive dietary patterns, 145 food items in the DHQ and 1259 in the DR were classified into thirty-three predefined food groups, and entered into a factor analysis.SettingThree areas in Japan; Osaka (urban), Nagano (rural inland) and Tottori (rural coastal).SubjectsA total of ninety-two Japanese women and ninety-two Japanese men aged 31–76 years.ResultsWe identified three dietary patterns (‘healthy’, ‘Western’ and ‘Japanese traditional’) in women and two (‘healthy’ and ‘Western’) in men, which showed a relatively similar direction and magnitude of factor loadings of food groups across the first and mean of four DHQ (DHQ1 and mDHQ, respectively) and 16 d DR. The Pearson correlation coefficients between DHQ1 and 16 d DR for the healthy, Western and Japanese traditional patterns in women were 0·57, 0·36 and 0·44, and for the healthy and Western patterns in men were 0·62 and 0·56, respectively. When mDHQ was examined, the correlation coefficients improved for women (0·45–0·69).ConclusionsDietary patterns derived from the DHQ could be used for epidemiological studies as surrogates of those derived from DR.

scholarly journals How Effective Is Auditory–Verbal Therapy (AVT) for Building Language Development of Children with Cochlear Implants? A Systematic Review

Life ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 239
Author(s):  
Paris Binos ◽  
Elina Nirgianaki ◽  
George Psillas
Keyword(s):  
Systematic Review ◽  
Young Children ◽  
Cochlear Implants ◽  
Research Question ◽  
Voice Quality ◽  
Receptive Vocabulary ◽  
Pubmed Database ◽  
Mainstream Society ◽  
Meta Analyses ◽  
Auditory Verbal Therapy

This systematic review sheds light on the effectiveness of auditory–verbal therapy (AVT) outcomes in children with cochlear implants (CIs). The presented outcome is based on research findings from the last 10 years. The systematic review was designed based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and Critical Appraisal of Treatment Evidence (CATE) checklist. Specific keywords were chosen based on the research question and searched on the PubMed database. All searched papers were analysed based on specific exclusion criteria and classified into four evidence levels. The results revealed that children who participated in AV therapy can achieve linguistic skills at the same level as their hearing peers. Voice quality seemed positively affected, placing young children with CIs in the normal range for receptive vocabulary development. In contrast, reading skills seemed less benefited. AV therapy seems to contribute to integration into mainstream society. Despite the recorded speech and language improvements of young children with CIs, the aim of AV therapy is still not fulfilled. AV therapy can be seen as the best clinical practice for young children with CIs till now, but the lack of well-controlled studies is undermining.

scholarly journals A posteriori dietary patterns and metabolic syndrome in adults: a systematic review and meta-analysis of observational studies

2018 ◽  
Vol 21 (9) ◽  
pp. 1681-1692 ◽  
Author(s):  
Sakineh Shab-Bidar ◽  
Mahdieh Golzarand ◽  
Mina Hajimohammadi ◽  
Sara Mansouri
Keyword(s):  
Systematic Review ◽  
Metabolic Syndrome ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Observational Studies ◽  
Meta Analysis ◽  
A Posteriori ◽  
Significant Positive Association ◽  
Western Dietary Pattern ◽  
Increased Risk

AbstractObjectiveObservational studies reported potential associations between different dietary patterns and the risk of metabolic syndrome (MetS); however, a consistent perspective has not been established to date. The current systematic review and meta-analysis aimed to evaluate the relationship between a posteriori dietary patterns and MetS by pooling available data.DesignMEDLINE and EMBASE databases were searched for relevant articles published up to July 2015 with no time restriction and with English language restriction. Two independent reviewers completed study selection and data extraction. Random-effects models (DerSimonian–Laird method) were used to pool effect sizes of eligible studies. The potential sources of heterogeneity were assessed using the I2 statistic.ResultsNineteen papers that identified dietary patterns using an a posteriori method were selected and included in the meta-analysis. The ‘Healthy/Prudent’ dietary pattern was inversely associated with risk of MetS (OR=0·89; 95 % CI 0·84, 0·94, P=0·002). In contrast, the ‘Unhealthy/Western’ dietary pattern had a significant positive association with risk of MetS (OR=1·16; 95 % CI 1·11, 1·22, P<0·001).ConclusionsOur findings provide evidence that greater adherence to a healthy/prudent dietary pattern is associated with a lower risk of MetS, while an unhealthy/Western dietary pattern is associated with increased risk of MetS. These data suggest that a diet based on healthy food choices is also beneficial for prevention of MetS.

scholarly journals Empirically derived major dietary patterns and their associations with overweight in Korean preschool children

2007 ◽  
Vol 98 (2) ◽  
pp. 416-421 ◽  
Author(s):  
Kyung Ok Shin ◽  
Se-Young Oh ◽  
Hyun Suh Park
Keyword(s):  
Factor Analysis ◽  
Preschool Children ◽  
Health Status ◽  
Young Children ◽  
Dietary Patterns ◽  
Dairy Products ◽  
Food Groups ◽  
Fast Foods ◽  
Usual Diet ◽  
Milk And Dairy Products

Prevailing dietary patterns and their association with nutritional outcomes are poorly understood, particularly for children in Korea. Our purposes were to identify major dietary patterns and to examine their associations with overweight among young children in Korea. For 1441 preschool children, usual diet was assessed by a FFQ, from which thirty-three food groups were created and entered into a factor analysis. We identified three dietary patterns by relative intake frequency of (1) vegetables, seaweeds, beans, fruits, milk and dairy products (Korean healthy pattern); (2) beef, pork, poultry, fish and fast foods (animal foods pattern); and (3) ice cream, soda, chocolate, cookies and candies (sweets pattern). The Korean healthy pattern was associated with better health status. As compared with the lowest quintile, the multivariate-adjusted OR of the highest quintile for health status inferior or similar to their peers was 0·59 (95 % CI 0·42, 0·84). Likelihood of being overweight was higher among those in the highest quintile (OR 1·77 (95 % CI 1·06, 2·94)) v. the lowest quintile regarding the animal foods pattern. These findings suggest that major dietary patterns are predictors of overweight and health status in Korean preschool children.

scholarly journals Reproducibility of A Posteriori Dietary Patterns across Time and Studies: A Scoping Review

2020 ◽  
Vol 11 (5) ◽  
pp. 1255-1281 ◽  
Author(s):  
Valeria Edefonti ◽  
Roberta De Vito ◽  
Andrea Salvatori ◽  
Francesca Bravi ◽  
Linia Patel ◽  
...  
Keyword(s):  
Statistical Model ◽  
Statistical Methods ◽  
Scoping Review ◽  
Dietary Patterns ◽  
Principal Component ◽  
Systematic Search ◽  
A Posteriori ◽  
Formal Assessment ◽  
Pubmed Database ◽  
Over Time

ABSTRACT Few studies have considered if a posteriori dietary patterns (DPs) are generalizable across different centers or studies, or if they are consistently seen over time. To date, no systematic search of the literature on these topics has been carried out. A scoping review was conducted through a systematic search on the PubMed database. In the current review, we included the 34 articles examining the extent to which a posteriori DPs were consistently seen: 1) across centers from the same study or across different studies potentially representing different populations or countries (here indicated as cross-study reproducibility) and 2) over longer time periods (i.e., ≥2 y) (here indicated as stability over time). Selected articles (published in 1981–2019, 32% from 2010 onwards) were based on observational studies, mostly from Europe and North America. Five articles were based on children and/or adolescents and 14 articles included adults (2 men; 12 women, of whom 3 were pregnant women). A posteriori DPs were mostly derived (32 articles) with principal component or factor analyses. Among the 9 articles assessing DP reproducibility across studies (number of centers/studies: 2–27; median: 3), 5 provided a formal assessment using statistical methods (4 index-based approaches of different complexity, 1 statistical model). A median of 4 DPs was reproduced across centers/studies (range: 1–7). Among the 25 articles assessing DP stability over time (number of time-occasions: 2–6; median: 3), 19 provided a formal assessment with statistical methods (17 index-based and/or test-based approaches, 1 statistical model, 1 with both strategies). The number and composition of DPs remained mostly stable over time. Based on the limited evidence collected, most identified DPs showed good reproducibility across studies and stability over time. However, when present within the single studies, the criteria for the formal assessment of cross-study reproducibility or stability over time were generally very basic.

Stroke, food groups, and dietary patterns: a systematic review

2012 ◽  
Vol 70 (8) ◽  
pp. 423-435 ◽  
Author(s):  
Ayesha Sherzai ◽  
Lauren T Heim ◽  
Cassaundra Boothby ◽  
A Dean Sherzai
Keyword(s):  
Systematic Review ◽  
Dietary Patterns ◽  
Food Groups

Dietary patterns, food groups and telomere length: a systematic review of current studies

2016 ◽  
Vol 71 (2) ◽  
pp. 151-158 ◽  
Author(s):  
N Rafie ◽  
S Golpour Hamedani ◽  
F Barak ◽  
S M Safavi ◽  
M Miraghajani
Keyword(s):  
Systematic Review ◽  
Telomere Length ◽  
Dietary Patterns ◽  
Food Groups

Examining the associations between a posteriori dietary patterns and obesity indexes: Systematic review of observational studies

2021 ◽  
pp. 026010602110209
Author(s):  
Yiannis Koutras ◽  
Stavri Chrysostomou ◽  
Dimitrios Poulimeneas ◽  
Mary Yannakoulia
Keyword(s):  
Systematic Review ◽  
Weight Loss ◽  
Body Weight ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Observational Studies ◽  
Weight Status ◽  
Weight Loss Maintenance ◽  
Longitudinal Change ◽  
A Posteriori

Background: Few reports on the association of population-derived dietary patterns with excess body weight, using the approach of a systematic review currently exist. Aim: The aim of the present systematic review was to identify dietary patterns associated with body mass index (BMI), body weight (BW)/BMI change, weight status and weight loss maintenance status. Methods: Using MEDLINE (via PubMed) and EBSCO Host databases, we systematically reviewed studies from 1980 to 2020, which included men and women, aged ≥18 years. Primary outcome was BMI or the longitudinal change of individuals’ BW or BMI, or weight status (normal weight/overweight/obesity) or weight loss maintenance status. We included observational studies, with or without a prospective design. Studies which met the inclusion criteria were evaluated based on the Newcastle–Ottawa Scale; only a posteriori dietary patterns were evaluated. Results: Twenty-six studies were eligible for inclusion in the current analysis. The results indicate a relationship between adherence to a lacto-vegetarian dietary pattern, characterized by high intake of fruits, vegetables, whole grains, unprocessed cereals, dairy and low intake of high-fat foods and sweets, and longitudinal change of individuals’ BW or BMI, or the risk of overweight/obesity. Conclusions: Promotion of this healthy dietary pattern, as an alternative to focusing on specific nutrients or foods, may be a promising approach to be included in future long-term weight maintenance interventions.

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