Comparison of Blood Levels of Riboflavin and Folate With Dietary Correlates Estimated From a Semi-Quantitative Food-Frequency Questionnaire in Older Persons in Portugal

Since information regarding biochemical parameters of riboflavin and folate status is limited in some populations of older adults, a food-frequency questionnaire is often used to estimate riboflavin and folate status. However, the performance of this type of questionnaire among this age group has no...

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Bibliographic Details
Published in:Journal of nutrition in gerontology and geriatrics 2012, Vol.31 (1), p.59-70
Main Authors: Tavares, Nelson R, Moreira, Pedro S, Amaral, Teresa F
Format: Article
Language:English
Subjects:
adult day care
Aged
Aged, 80 and over
Biomarkers - blood
blood serum
correlation
Correlation analysis
Cross-Sectional Studies
Diet
Dietary Supplements
elderly
energy
Energy Intake
erythrocytes
Female
folate
folic acid
Folic Acid - administration & dosage
Folic Acid - blood
food frequency questionnaire
food frequency questionnaires
food intake
Gerontology
glutathione-disulfide reductase
Humans
Male
Middle Aged
Nursing
Nutrition Assessment
Older people
Portugal
Questionnaires
Reproducibility of Results
riboflavin
Riboflavin - administration & dosage
Riboflavin - blood
status
Surveys and Questionnaires
validity
Vitamin B
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Summary:Since information regarding biochemical parameters of riboflavin and folate status is limited in some populations of older adults, a food-frequency questionnaire is often used to estimate riboflavin and folate status. However, the performance of this type of questionnaire among this age group has not been comprehensively evaluated. Thus, we sought to assess riboflavin and folate status in older adults living in Portugal and to validate findings from a semiquantitative food-frequency questionnaire (FFQ), by comparison to these blood measures. We used a cross-sectional study to investigate riboflavin in red blood cells (as Glutathione Reductase Activity Coefficient; EGRAC) and folate in the serum of 88 older persons (66.7% female), aged between 60 and 94 years, recruited from seven adult day care community centers in Porto, Portugal. Forty-six subjects had low EGRAC levels (
ISSN:2155-1200
2155-1197
2155-1200
DOI:10.1080/21551197.2012.647557