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Article

Validation of a Newly Developed Food Frequency Questionnaire to Assess Dietary Intakes of Magnesium

1
Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, 1601 Cherry St., Philadelphia, PA 19102, USA
2
College of Medicine, Drexel University, 2900 W Queen Lane, Philadelphia, PA 19129, USA
*
Author to whom correspondence should be addressed.
Nutrients 2019, 11(11), 2789; https://doi.org/10.3390/nu11112789
Received: 29 October 2019 / Accepted: 11 November 2019 / Published: 15 November 2019
Magnesium (Mg) intake is an important indication of an individual’s Mg status, but no validated food frequency questionnaire (FFQ) to assess intake currently exists. The purpose of this study was to develop and investigate the validity of a semi-quantitative Mg food frequency questionnaire (MgFFQ) against a 14-day food diary to assess average daily Mg intakes. In this cross-sectional study, 135 adults aged 18 to 75 completed the 33-item MgFFQ and a 14-day food diary to assess their Mg intakes. Coefficients of variance, Pearson’s correlation coefficients, and/or Spearman’s rank correlation coefficient tests were used to determine the relationship between the MgFFQ and the average Mg intake from the 14-day food diary among all participants, men, women, age groups, and body mass index (BMI) groups. The correlation between the MgFFQ and the 14-day food diary was significant (p < 0.05) for all participants (r = 0.798), men (r = 0.855), women (r = 0.759), normal weight (r = 0.762), overweight (r = 0.858), and obese (r = 0.675) weight statuses, and in all age groups. The calcium to magnesium intake (Ca:Mg) ratio in all participants was higher than optimal, 3.39 (2.11). Our results suggest that the MgFFQ is a valid method to capture Mg intake over an extended period of time, therefore acting as a valuable tool to quickly determine Mg intake. View Full-Text
Keywords: magnesium; food frequency questionnaire; food diary; validation study magnesium; food frequency questionnaire; food diary; validation study
MDPI and ACS Style

Sukumar, D.; DeLuccia, R.; Cheung, M.; Ramadoss, R.; Ng, T.; Lamoureux, A. Validation of a Newly Developed Food Frequency Questionnaire to Assess Dietary Intakes of Magnesium. Nutrients 2019, 11, 2789. https://doi.org/10.3390/nu11112789

AMA Style

Sukumar D, DeLuccia R, Cheung M, Ramadoss R, Ng T, Lamoureux A. Validation of a Newly Developed Food Frequency Questionnaire to Assess Dietary Intakes of Magnesium. Nutrients. 2019; 11(11):2789. https://doi.org/10.3390/nu11112789

Chicago/Turabian Style

Sukumar, Deeptha, Rosemary DeLuccia, May Cheung, Rohit Ramadoss, Tammy Ng, and Alicia Lamoureux. 2019. "Validation of a Newly Developed Food Frequency Questionnaire to Assess Dietary Intakes of Magnesium" Nutrients 11, no. 11: 2789. https://doi.org/10.3390/nu11112789

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