Relative validity of a food frequency questionnaire used in the Inter99 study

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Relative validity of a food frequency questionnaire used in the Inter99 study. / Toft, Ulla Marie Nørgaard; Kristoffersen, Lis; Ladelund, S; Bysted, A; Jakobsen, J; Lau, Cathrine; Jørgensen, Torben; Borch-Johnsen, Knut; Ovesen, L.

In: European Journal of Clinical Nutrition, Vol. 62, No. 8, 2007, p. 1038-46.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Toft, UMN, Kristoffersen, L, Ladelund, S, Bysted, A, Jakobsen, J, Lau, C, Jørgensen, T, Borch-Johnsen, K & Ovesen, L 2007, 'Relative validity of a food frequency questionnaire used in the Inter99 study', European Journal of Clinical Nutrition, vol. 62, no. 8, pp. 1038-46. https://doi.org/10.1038/sj.ejcn.1602815

APA

Toft, U. M. N., Kristoffersen, L., Ladelund, S., Bysted, A., Jakobsen, J., Lau, C., ... Ovesen, L. (2007). Relative validity of a food frequency questionnaire used in the Inter99 study. European Journal of Clinical Nutrition, 62(8), 1038-46. https://doi.org/10.1038/sj.ejcn.1602815

Vancouver

Toft UMN, Kristoffersen L, Ladelund S, Bysted A, Jakobsen J, Lau C et al. Relative validity of a food frequency questionnaire used in the Inter99 study. European Journal of Clinical Nutrition. 2007;62(8):1038-46. https://doi.org/10.1038/sj.ejcn.1602815

Author

Toft, Ulla Marie Nørgaard ; Kristoffersen, Lis ; Ladelund, S ; Bysted, A ; Jakobsen, J ; Lau, Cathrine ; Jørgensen, Torben ; Borch-Johnsen, Knut ; Ovesen, L. / Relative validity of a food frequency questionnaire used in the Inter99 study. In: European Journal of Clinical Nutrition. 2007 ; Vol. 62, No. 8. pp. 1038-46.

Bibtex

@article{91f5d0f004c811deb05e000ea68e967b,
title = "Relative validity of a food frequency questionnaire used in the Inter99 study",
abstract = "OBJECTIVE: To evaluate the validity of the Inter99 food frequency questionnaire (FFQ) compared with a 28-days' diet history and biomarkers. SUBJECTS: A random sample of 13 016 individuals were drawn from a general population and invited for a health screening programme. Participation rate was 52.5{\%}. All high-risk individuals were re-invited for assessment after 1 and 3 years and completed a 198-item FFQ at all three occasions. Participants attending for 3 years follow-up were invited to participate in the validation study, including a 28-days' diet history, a 24-h urine collection and a fasting blood sample. Overall, 264 subjects participated. RESULTS: Spearman's rank correlation coefficients between the two dietary methods ranged from 0.31(beta-carotene) to 0.64 (fruits) in men and from 0.31 (polyunsaturated fat and sodium) to 0.64 (fruits) for women. The proportion of individuals classified in the same or adjacent quintiles were, on average, 72{\%} for men and 69{\%} for women. Gross misclassification was found on average in 2{\%}. The correlation coefficients of the residuals ranged from 0.27 (sodium) to 0.61 (fruits) for men and from 0.21 (sodium) to 0.62 (B12-vitamin) for women. Correlation coefficients between fruit and vegetable intake and carotenoids ranged from -0.08 (lycopene) to 0.44 (alpha-carotene). For the residuals the correlation coefficients ranged from -0.004 (lycopene) to 0.47 (alpha-carotene). CONCLUSION: The Inter99 FFQ and the residuals of the intake provide acceptable classification of individuals according to their dietary intakes and the FFQ gives a good quantitative measurement of key dietary components.",
author = "Toft, {Ulla Marie N{\o}rgaard} and Lis Kristoffersen and S Ladelund and A Bysted and J Jakobsen and Cathrine Lau and Torben J{\o}rgensen and Knut Borch-Johnsen and L Ovesen",
note = "Keywords: 4-Aminobenzoic Acid; Adult; Biological Markers; Carotenoids; Denmark; Diet; Diet Records; Diet Surveys; Female; Fruit; Humans; Male; Middle Aged; Nitrogen; Nutrition Assessment; Questionnaires; Reproducibility of Results; Sensitivity and Specificity; Statistics, Nonparametric; Vegetables",
year = "2007",
doi = "10.1038/sj.ejcn.1602815",
language = "English",
volume = "62",
pages = "1038--46",
journal = "European Journal of Clinical Nutrition",
issn = "0954-3007",
publisher = "nature publishing group",
number = "8",

}

RIS

TY - JOUR

T1 - Relative validity of a food frequency questionnaire used in the Inter99 study

AU - Toft, Ulla Marie Nørgaard

AU - Kristoffersen, Lis

AU - Ladelund, S

AU - Bysted, A

AU - Jakobsen, J

AU - Lau, Cathrine

AU - Jørgensen, Torben

AU - Borch-Johnsen, Knut

AU - Ovesen, L

N1 - Keywords: 4-Aminobenzoic Acid; Adult; Biological Markers; Carotenoids; Denmark; Diet; Diet Records; Diet Surveys; Female; Fruit; Humans; Male; Middle Aged; Nitrogen; Nutrition Assessment; Questionnaires; Reproducibility of Results; Sensitivity and Specificity; Statistics, Nonparametric; Vegetables

PY - 2007

Y1 - 2007

N2 - OBJECTIVE: To evaluate the validity of the Inter99 food frequency questionnaire (FFQ) compared with a 28-days' diet history and biomarkers. SUBJECTS: A random sample of 13 016 individuals were drawn from a general population and invited for a health screening programme. Participation rate was 52.5%. All high-risk individuals were re-invited for assessment after 1 and 3 years and completed a 198-item FFQ at all three occasions. Participants attending for 3 years follow-up were invited to participate in the validation study, including a 28-days' diet history, a 24-h urine collection and a fasting blood sample. Overall, 264 subjects participated. RESULTS: Spearman's rank correlation coefficients between the two dietary methods ranged from 0.31(beta-carotene) to 0.64 (fruits) in men and from 0.31 (polyunsaturated fat and sodium) to 0.64 (fruits) for women. The proportion of individuals classified in the same or adjacent quintiles were, on average, 72% for men and 69% for women. Gross misclassification was found on average in 2%. The correlation coefficients of the residuals ranged from 0.27 (sodium) to 0.61 (fruits) for men and from 0.21 (sodium) to 0.62 (B12-vitamin) for women. Correlation coefficients between fruit and vegetable intake and carotenoids ranged from -0.08 (lycopene) to 0.44 (alpha-carotene). For the residuals the correlation coefficients ranged from -0.004 (lycopene) to 0.47 (alpha-carotene). CONCLUSION: The Inter99 FFQ and the residuals of the intake provide acceptable classification of individuals according to their dietary intakes and the FFQ gives a good quantitative measurement of key dietary components.

AB - OBJECTIVE: To evaluate the validity of the Inter99 food frequency questionnaire (FFQ) compared with a 28-days' diet history and biomarkers. SUBJECTS: A random sample of 13 016 individuals were drawn from a general population and invited for a health screening programme. Participation rate was 52.5%. All high-risk individuals were re-invited for assessment after 1 and 3 years and completed a 198-item FFQ at all three occasions. Participants attending for 3 years follow-up were invited to participate in the validation study, including a 28-days' diet history, a 24-h urine collection and a fasting blood sample. Overall, 264 subjects participated. RESULTS: Spearman's rank correlation coefficients between the two dietary methods ranged from 0.31(beta-carotene) to 0.64 (fruits) in men and from 0.31 (polyunsaturated fat and sodium) to 0.64 (fruits) for women. The proportion of individuals classified in the same or adjacent quintiles were, on average, 72% for men and 69% for women. Gross misclassification was found on average in 2%. The correlation coefficients of the residuals ranged from 0.27 (sodium) to 0.61 (fruits) for men and from 0.21 (sodium) to 0.62 (B12-vitamin) for women. Correlation coefficients between fruit and vegetable intake and carotenoids ranged from -0.08 (lycopene) to 0.44 (alpha-carotene). For the residuals the correlation coefficients ranged from -0.004 (lycopene) to 0.47 (alpha-carotene). CONCLUSION: The Inter99 FFQ and the residuals of the intake provide acceptable classification of individuals according to their dietary intakes and the FFQ gives a good quantitative measurement of key dietary components.

U2 - 10.1038/sj.ejcn.1602815

DO - 10.1038/sj.ejcn.1602815

M3 - Journal article

C2 - 17538538

VL - 62

SP - 1038

EP - 1046

JO - European Journal of Clinical Nutrition

JF - European Journal of Clinical Nutrition

SN - 0954-3007

IS - 8

ER -

ID: 10870462