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Title

A 14-Item Mediterranean Diet Assessment Tool and Obesity Indexes among High-Risk Subjects: The PREDIMED Trial

AuthorsMartínez-González, Miguel A.; García-Arellano, Ana; Toledo, Estefanía; Salas-Salvadó, Jordi; Buil-Cosiales, Pilar; Corella, Dolores; Covas, María Isabel; Schröder, Helmut; Arós, Fernando; Gómez-Gracia, Enrique; Fiol, Miquel; Ruiz-Gutiérrez, Valentina ; Lapetra, José; Lamuela-Raventós, Rosa M.; Serra-Majem, Lluís; Pintó, Xavier; Muñoz, Miguel Ángel; Wärnberg, Julia; Ros, Emilio; Estruch, Ramón
KeywordsMediterranean diet
Obesity
PREDIMED
Issue Date2012
PublisherPublic Library of Science
CitationPlos One 7(8): e43134 (2012)
AbstractObjective Independently of total caloric intake, a better quality of the diet (for example, conformity to the Mediterranean diet) is associated with lower obesity risk. It is unclear whether a brief dietary assessment tool, instead of full-length comprehensive methods, can also capture this association. In addition to reduced costs, a brief tool has the interesting advantage of allowing immediate feedback to participants in interventional studies. Another relevant question is which individual items of such a brief tool are responsible for this association. We examined these associations using a 14-item tool of adherence to the Mediterranean diet as exposure and body mass index, waist circumference and waist-to-height ratio (WHtR) as outcomes. Design Cross-sectional assessment of all participants in the “PREvención con DIeta MEDiterránea” (PREDIMED) trial. Subjects 7,447 participants (55–80 years, 57% women) free of cardiovascular disease, but with either type 2 diabetes or ≥3 cardiovascular risk factors. Trained dietitians used both a validated 14-item questionnaire and a full-length validated 137-item food frequency questionnaire to assess dietary habits. Trained nurses measured weight, height and waist circumference. Results Strong inverse linear associations between the 14-item tool and all adiposity indexes were found. For a two-point increment in the 14-item score, the multivariable-adjusted differences in WHtR were −0.0066 (95% confidence interval, –0.0088 to −0.0049) for women and –0.0059 (–0.0079 to –0.0038) for men. The multivariable-adjusted odds ratio for a WHtR>0.6 in participants scoring ≥10 points versus ≤7 points was 0.68 (0.57 to 0.80) for women and 0.66 (0.54 to 0.80) for men. High consumption of nuts and low consumption of sweetened/carbonated beverages presented the strongest inverse associations with abdominal obesity. Conclusions A brief 14-item tool was able to capture a strong monotonic inverse association between adherence to a good quality dietary pattern (Mediterranean diet) and obesity indexes in a population of adults at high cardiovascular risk.
Publisher version (URL)http://dx.doi.org/10.1371/journal.pone.0043134
URIhttp://hdl.handle.net/10261/55405
DOI10.1371/journal.pone.0043134
E-ISSN1932-6203
Appears in Collections:(IG) Artículos
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