Evaluation of brief dietary questions to estimate vegetable and fruit consumption - using serum carotenoids and red-cell folate

Coyne, Terry, Ibiebele, Torukiri I, McNaughton, Sarah, Rutsihauser, Ingrid H. E., O'Dea, Kerin, Hodge, Allison M., McClintock, Christine, Findlay, Michael G. and Lee, Amanda 2005, Evaluation of brief dietary questions to estimate vegetable and fruit consumption - using serum carotenoids and red-cell folate, Public health nutrition, vol. 8, no. 3, pp. 298-308, doi: 10.1079/PHN2004688.

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Title Evaluation of brief dietary questions to estimate vegetable and fruit consumption - using serum carotenoids and red-cell folate
Author(s) Coyne, Terry
Ibiebele, Torukiri I
McNaughton, SarahORCID iD for McNaughton, Sarah orcid.org/0000-0001-5936-9820
Rutsihauser, Ingrid H. E.
O'Dea, Kerin
Hodge, Allison M.
McClintock, Christine
Findlay, Michael G.
Lee, Amanda
Journal name Public health nutrition
Volume number 8
Issue number 3
Start page 298
End page 308
Publisher CABI Publishing
Place of publication Wallingford, England
Publication date 2005
ISSN 1368-9800
Keyword(s) vegetables
dietary intake methods
serum carotenoids
red-cell folate
biological markers
brief questions
short questions
Summary Objective To evaluate responses to self-administered brief questions regarding consumption of vegetables and fruit by comparison with blood levels of serum carotenoids and red-cell folate.

Design A cross-sectional study in which participants reported their usual intake of fruit and vegetables in servings per day, and serum levels of five carotenoids (α-carotene, β-carotene, β-cryptoxanthin, lutein/zeaxanthin and lycopene) and red-cell folate were measured. Serum carotenoid levels were determined by high-performance liquid chromatography, and red-cell folate by an automated immunoassay system.

Settings and subjects Between October and December 2000, a sample of 1598 adults aged 25 years and over, from six randomly selected urban centres in Queensland, Australia, were examined as part of a national study conducted to determine the prevalence of diabetes and associated cardiovascular risk factors.

Results Statistically significant (P<0.01) associations with vegetable and fruit intake (categorised into groups: ≤1 serving, 2–3 servings and ≥4 servings per day) were observed for α-carotene, β-carotene, β-cryptoxanthin, lutein/zeaxanthin and red-cell folate. The mean level of these carotenoids and of red-cell folate increased with increasing frequency of reported servings of vegetables and fruit, both before and after adjusting for potential confounding factors. A significant association with lycopene was observed only for vegetable intake before adjusting for confounders.

Conclusions These data indicate that brief questions may be a simple and valuable tool for monitoring vegetable and fruit intake in this population.
Language eng
DOI 10.1079/PHN2004688
Field of Research 111199 Nutrition and Dietetics not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2005, CABI Publishing
Persistent URL http://hdl.handle.net/10536/DRO/DU:30008845

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