Evidence map›Paper›PMID 34484382›Full record

ReviewJournal of research in medical sciences : the official journal of Isfahan University of Medical Sciences2021

Developed and validated food frequency questionnaires in Iran: A systematic literature review.

Samaneh Sadat Ayoubi, Zahra Yaghoubi, Naseh Pahlavani, Elena Philippou, Mahsa MalekAhmadi, Habibollah Esmaily, Golnaz Ranjbar, Maryam Amini, Mohsen Nematy, Abdolreza Norouzy

Abstract readReview
In one paragraph

Review in Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

  1. Trial
  2. Food Frequency Questionnaires Validated in Brazil: A Scoping Review.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Samaneh Sadat AyoubiDepartment of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Zahra YaghoubiDepartment of Community Oral Health, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
Naseh PahlavaniCellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
Elena PhilippouDepartment of Life and Health Sciences and Engineering, University of Nicosia, Nicosia, Cyprus.
Mahsa MalekAhmadiDepartment of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Habibollah EsmailySocial Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Golnaz RanjbarDepartment of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Maryam AminiDepartment of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran.
Mohsen NematyDepartment of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Abdolreza NorouzyDepartment of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFood frequency questionnaires (FFQs) are inexpensive, easy to administer, and practical tools for dietary assessment in epidemiological studies. Several studies have investigated the validity and reproducibility of FFQs for the Iranian population. This systematic review aimed to assess the developed and validated FFQs for use in the Iranian population and compare their features and the validation studies in this regard. MATERIALS AND

methodsA comprehensive search was conducted in ISI Web of Knowledge, PubMed, Scopus, and Iranian databases without time constraints to retrieve the relevant English and non-English publications. Studies would be included if they were focused on the design and validation of FFQs in Iran.

resultsIn total, 782 articles were found, 22 of which met the eligibility criteria and evaluated 18 FFQs. Validation studies had been conducted on 18 out of 20 FFQs. The median of the correlation coefficients for the comparison of the FFQ intakes and the dietary reference method by nutrients varied within the range of 0.19-0.65, indicating reasonable validity. The median of the correlation coefficients for the comparison of two FFQs by nutrients was 0.28-0.85, showing appropriate reproducibility. However, low validity was observed in some nutrients and food groups, such as egg, legumes, iron, folate, and α-tocopherol. In seven studies, biomarkers were used for the assessment of nutrient intake using an FFQ with the median correlation coefficient of -0.07-0.42. In addition, the quality of methodology was evaluated in the FFQ validation studies, with 18 out of 20 studies reporting good and excellent quality.

conclusionAlthough the FFQs used to assess the dietary intake of the Iranian population have different features, they have acceptable validity and reproducibility. Nevertheless, some food groups and nutrients have poor validity and must be considered attentively.

Indexed as

Food frequency questionnairesIranreproducibilitysystematic reviewvalidity

Identifiers

PMID34484382
PMCPMC8384004

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.