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Validity and reliability of a new food frequency questionnaire compared to 24 h recalls and biochemical measurements: pilot phase of Golestan cohort study of esophageal cancer.
Eur J Clin Nutr. 2006 Aug; 60(8):971-7.EJ

Abstract

BACKGROUND

A pilot study was carried out to evaluate validity and reproducibility of a food frequency questionnaire (FFQ), which was designed to be used in a prospective cohort study in a population at high risk for esophageal cancer in northern Iran.

METHODS

The FFQ was administered four times to 131 subjects, aged 35-65 years, of both sexes. Twelve 24-h dietary recalls for two consecutive days were administered monthly during 1 year and used as a reference method. The excretion of nitrogen was measured on four 24-h urine samples, and plasma levels of beta-carotene, retinol, vitamin C and alpha-tocopherol was measured from two time points. Relative validity of FFQ and 24-h diet recall was assessed by comparing nutrient intake derived from both methods with the urinary nitrogen and plasma levels of beta-carotene, retinol, vitamin C and alpha-tocopherol.

RESULTS

Correlation coefficients comparing energy and nutrients intake based on the mean of the four FFQ and the mean of twelve 24-h diet recalls were 0.75 for total energy, 0.75 for carbohydrates, 0.76 for proteins and 0.65 for fat. Correlation coefficients between the FFQ-based intake and serum levels of beta-carotene, retinol, vitamin C and vitamin E/alpha-tocopherol were 0.37, 0.32, 0.35 and 0.06, respectively. Correlation coefficients between urinary nitrogen and FFQ-based protein intake ranged from 0.23 to 0.35. Intraclass correlation coefficients used to measure reproducibility of FFQ ranged from 0.66 to 0.89.

CONCLUSION

We found that the FFQ provides valid and reliable measurements of habitual intake for energy and most of the nutrients studied.

Authors+Show Affiliations

Digestive Disease Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

16465196

Citation

Malekshah, A F., et al. "Validity and Reliability of a New Food Frequency Questionnaire Compared to 24 H Recalls and Biochemical Measurements: Pilot Phase of Golestan Cohort Study of Esophageal Cancer." European Journal of Clinical Nutrition, vol. 60, no. 8, 2006, pp. 971-7.
Malekshah AF, Kimiagar M, Saadatian-Elahi M, et al. Validity and reliability of a new food frequency questionnaire compared to 24 h recalls and biochemical measurements: pilot phase of Golestan cohort study of esophageal cancer. Eur J Clin Nutr. 2006;60(8):971-7.
Malekshah, A. F., Kimiagar, M., Saadatian-Elahi, M., Pourshams, A., Nouraie, M., Goglani, G., Hoshiarrad, A., Sadatsafavi, M., Golestan, B., Yoonesi, A., Rakhshani, N., Fahimi, S., Nasrollahzadeh, D., Salahi, R., Ghafarpour, A., Semnani, S., Steghens, J. P., Abnet, C. C., Kamangar, F., ... Malekzadeh, R. (2006). Validity and reliability of a new food frequency questionnaire compared to 24 h recalls and biochemical measurements: pilot phase of Golestan cohort study of esophageal cancer. European Journal of Clinical Nutrition, 60(8), 971-7.
Malekshah AF, et al. Validity and Reliability of a New Food Frequency Questionnaire Compared to 24 H Recalls and Biochemical Measurements: Pilot Phase of Golestan Cohort Study of Esophageal Cancer. Eur J Clin Nutr. 2006;60(8):971-7. PubMed PMID: 16465196.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Validity and reliability of a new food frequency questionnaire compared to 24 h recalls and biochemical measurements: pilot phase of Golestan cohort study of esophageal cancer. AU - Malekshah,A F, AU - Kimiagar,M, AU - Saadatian-Elahi,M, AU - Pourshams,A, AU - Nouraie,M, AU - Goglani,G, AU - Hoshiarrad,A, AU - Sadatsafavi,M, AU - Golestan,B, AU - Yoonesi,A, AU - Rakhshani,N, AU - Fahimi,S, AU - Nasrollahzadeh,D, AU - Salahi,R, AU - Ghafarpour,A, AU - Semnani,S, AU - Steghens,J P, AU - Abnet,C C, AU - Kamangar,F, AU - Dawsey,S M, AU - Brennan,P, AU - Boffetta,P, AU - Malekzadeh,R, Y1 - 2006/02/08/ PY - 2006/2/9/pubmed PY - 2006/12/9/medline PY - 2006/2/9/entrez SP - 971 EP - 7 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 60 IS - 8 N2 - BACKGROUND: A pilot study was carried out to evaluate validity and reproducibility of a food frequency questionnaire (FFQ), which was designed to be used in a prospective cohort study in a population at high risk for esophageal cancer in northern Iran. METHODS: The FFQ was administered four times to 131 subjects, aged 35-65 years, of both sexes. Twelve 24-h dietary recalls for two consecutive days were administered monthly during 1 year and used as a reference method. The excretion of nitrogen was measured on four 24-h urine samples, and plasma levels of beta-carotene, retinol, vitamin C and alpha-tocopherol was measured from two time points. Relative validity of FFQ and 24-h diet recall was assessed by comparing nutrient intake derived from both methods with the urinary nitrogen and plasma levels of beta-carotene, retinol, vitamin C and alpha-tocopherol. RESULTS: Correlation coefficients comparing energy and nutrients intake based on the mean of the four FFQ and the mean of twelve 24-h diet recalls were 0.75 for total energy, 0.75 for carbohydrates, 0.76 for proteins and 0.65 for fat. Correlation coefficients between the FFQ-based intake and serum levels of beta-carotene, retinol, vitamin C and vitamin E/alpha-tocopherol were 0.37, 0.32, 0.35 and 0.06, respectively. Correlation coefficients between urinary nitrogen and FFQ-based protein intake ranged from 0.23 to 0.35. Intraclass correlation coefficients used to measure reproducibility of FFQ ranged from 0.66 to 0.89. CONCLUSION: We found that the FFQ provides valid and reliable measurements of habitual intake for energy and most of the nutrients studied. SN - 0954-3007 UR - https://www.unboundmedicine.com/medline/citation/16465196/Validity_and_reliability_of_a_new_food_frequency_questionnaire_compared_to_24_h_recalls_and_biochemical_measurements:_pilot_phase_of_Golestan_cohort_study_of_esophageal_cancer_ DB - PRIME DP - Unbound Medicine ER -