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September 15, 1991American Journal of Epidemiology

An Evaluation of a Food Frequency Questionnaire for Assessing Dietary Intake of Specific Carotenoids and Vitamin E among Low-Income Black Women

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RCRalph J. CoatesPortsmouth Hospitals NHS Trust JEJ. William EleyTwitter (United States)GBGladys BlockUniversité Claude Bernard Lyon 1

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Implication

Validation study demonstrates significant associations between reported dietary and serum carotenoids and vitamin E in low-income Black women, indicating the dietary questionnaire is valid.

Key Points

To evaluate the validity of the National Cancer Institute food frequency questionnaire for assessing dietary intakes of vitamin E and specific carotenoids in low-income Black women.
Assessed a modified National Cancer Institute diet questionnaire with six added ethnic and regional foods among 91 Black female hospital outpatients aged 30–69 years in Atlanta, Georgia.
Calculated correlation coefficients between questionnaire-derived dietary intakes and serum concentrations of carotenoids and vitamin E, controlling for age, body mass index, caloric intake, alcohol use, supplements, medications, and serum lipid levels.
Among nonsmokers, adjusted correlation coefficients between reported intake and serum levels for carotenes, alpha-carotene, beta-carotene, cryptoxanthin, and vitamin E ranged from 0.32 to 0.45 (0.30 to 0.54 after excluding 17 error-containing questionnaires).
Dietary intakes of lycopene and lutein showed no correlation with serum levels (r = -0.06 to 0.09), and correlations across all nutrients were notably reduced among smokers (r = 0.00 to 0.32).

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Coates et al. (1991) studied this question.

synapsesocial.com/papers/6a1bc3664ebd09f3dfa8f60c https://doi.org/10.1093/oxfordjournals.aje.a116138

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Implication

Validation study demonstrates significant associations between reported dietary and serum carotenoids and vitamin E in low-income Black women, indicating the dietary questionnaire is valid.

An Evaluation of a Food Frequency Questionnaire for Assessing Dietary Intake of Specific Carotenoids and Vitamin E among Low-Income Black Women

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Implication

Key Points

Cite This Study

An Evaluation of a Food Frequency Questionnaire for Assessing Dietary Intake of Specific Carotenoids and Vitamin E among Low-Income Black Women

Discussion

Member takes

Implication

Key Points

Cite This Study

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