Validation of the German version of the Mediterranean Diet Adherence Screener (MEDAS) questionnaire
Hebestreit K, Yahiaoui-Doktor M, Engel C, Vetter W, Siniatchkin M, Erickson N, Halle M, Kiechle M, Bischoff SC (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 17
Article Number: 341
Journal Issue: 1
DOI: 10.1186/s12885-017-3337-y
Abstract
Background: Health benefits of the Mediterranean Diet (MD) have been shown in different at-risk populations. A German translation of the Mediterranean Diet Adherence Screener (MEDAS) from the PREvención con DIeta MEDiterránea (PREDIMED) consortium was used in the LIBRE study, investigating effects of lifestyle-intervention on women with BRCA1/2 mutations. The purpose of the present study is to validate the MEDAS German version. Methods: LIBRE is a multicentre (three university hospitals during this pilot phase), unblinded, randomized, controlled clinical trial. Women with a BRCA1/2 mutation of age 18 or over who provided written consent were eligible for the trial. As part of the assessment, all were given a full-length Food Frequency Questionnaire (FFQ) and MEDAS at baseline and after 3 months. Data derived from FFQ was compared to MEDAS in order to evaluate agreement or concordance between the two questionnaires. Additionally, the association of dietary intake biomarkers in the blood (β-carotene, omega-3, omega-6 and omega-9 fatty acids and high-sensitivity C-reactive protein (hsCRP)) with some MEDAS items was analyzed using t-Tests and a multivariate regression. Results: The participants of the LIBRE pilot study were 68 in total (33 Intervention, 35 Control). Only participants who completed both questionnaires were included in this analysis (baseline: 66, month three: 54). The concordance between these two questionnaires varied between the items (Intraclass correlation coefficient of 0.91 for pulses at the highest and -0.33 for sugar-sweetened drinks). Mean MEDAS scores (sum of all items) were 9% higher than their FFQ counter-parts at baseline and 15% after 3 months. Higher fish consumption (at least 3 portions) was associated with lower omega-6 fatty acid levels (p = 0.026) and higher omega-3 fatty acid levels (p = 0.037), both results being statistically significant. Conclusions: We conclude that the German MEDAS in its current version could be a useful tool in clinical trials and in practice to assess adherence to MD. Trial registration:ClinicalTrials.gov , registered on March 12, 2014, identifier: NCT02087592. World Health Organization Trial Registration, registered on 3 August 2015, identifier: NCT02087592.
Involved external institutions
Universität Leipzig
Germany (DE)
Universitätsklinikum Schleswig-Holstein (UKSH)
Germany (DE)
Ludwig-Maximilians-Universität (LMU)
Germany (DE)
Technische Universität München (TUM)
Germany (DE)
Universität Hohenheim
Germany (DE)
Germany (DE)
Universitätsklinikum Schleswig-Holstein (UKSH)
Germany (DE)
Ludwig-Maximilians-Universität (LMU)
Germany (DE)
Technische Universität München (TUM)
Germany (DE)
Universität Hohenheim
Germany (DE)
How to cite
APA:
Hebestreit, K., Yahiaoui-Doktor, M., Engel, C., Vetter, W., Siniatchkin, M., Erickson, N.,... Bischoff, S.C. (2017). Validation of the German version of the Mediterranean Diet Adherence Screener (MEDAS) questionnaire. BMC Cancer, 17(1). https://doi.org/10.1186/s12885-017-3337-y
MLA:
Hebestreit, Katrin, et al. "Validation of the German version of the Mediterranean Diet Adherence Screener (MEDAS) questionnaire." BMC Cancer 17.1 (2017).
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