Evidence map›Paper›PMID 29806636›Full record

ArticleJournal of epidemiology2018

Validity of a Self-administered Food Frequency Questionnaire for the Estimation of Acrylamide Intake in the Japanese Population: The JPHC FFQ Validation Study.

Ayaka Kotemori, Junko Ishihara, Misako Nakadate, Norie Sawada, Motoki Iwasaki, Tomotaka Sobue, Shoichiro Tsugane

Open access · goldAbstract readValidation Study
In one paragraph

Article in Journal of epidemiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.5field-weighted citation impact, top 8% of its field
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

17 citing papers in PubMed, 31 citations in OpenAlex.

  1. Review
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  6. Exposure to environmental chemicals and cancer risk: epidemiological evidence from Japanese studies.Genes and environment : the official journal of the Japanese Environmental Mutagen Society · 2023
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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

7 authors at 4 institutions in 2 countries.

Ayaka KotemoriEpidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center.ORCID http://orcid.org/0000-0003-3954-8615
Junko IshiharaDepartment of Food and Life Science, Azabu University.
Misako NakadateDivision of Nutrition Science, Graduate School of Sagami Women's University.
Norie SawadaEpidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center.ORCID http://orcid.org/0000-0002-9936-1476
Motoki IwasakiEpidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center.
Tomotaka SobueDepartment of Environmental Medicine and Population Sciences, Graduate School of Medicine, Osaka University.
Shoichiro TsuganeEpidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center.ORCID http://orcid.org/0000-0003-4105-2774
Prevention Group · USAzabu University · JPSagami Women's University · JPThe University of Osaka · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAcrylamide, a probable carcinogen to humans, forms during high temperature cooking. Dietary exposure to acrylamide among the Japanese population is unknown. We aimed to establish and validate a method to assess acrylamide exposure among the Japanese population using a food frequency questionnaire (FFQ) from the Japan Public Health Center-based prospective study.

methodsValidation studies for the FFQ were conducted in 1994 (Cohort I, n = 215) and 1996 (Cohort II, n = 350). The 28-day dietary records (DRs) were collected over 1 year. The FFQ was distributed before and after DR collection. Data for acrylamide exposure were based on reported measurements in Japan, and calculations considered the cooking process for specific vegetables in a home setting. Spearman's rank correlation and weighted kappa coefficients were calculated from energy-adjusted data.

resultsMean acrylamide intake levels estimated from DRs for Cohorts I and II were 6.78 (standard deviation [SD], 3.89) µg/day and 7.25 (SD, 3.33) µg/day, and corresponding levels estimated from the FFQ were 7.03 (SD, 4.30) µg/day and 7.14 (SD, 3.38) µg/day, respectively. Deattenuated correlation coefficients for men and women were 0.54 and 0.48 in Cohort I and 0.40 and 0.37 in Cohort II, respectively. Weighted kappa coefficients were over 0.80 in all cases. The main contributing food groups from DRs were beverages, confectioneries, vegetables, potatoes and starches, and cereals.

conclusionsHigh kappa values validate the use of FFQ in epidemiological studies. The marked contribution of cooked vegetables indicates the importance of considering household cooking methods in assessing acrylamide intake levels in the Japanese population.

Indexed as

Diet SurveysAcrylamideCohort StudiesDietFemaleHumansJapanMaleReproducibility of ResultsAcrylamideacrylamidecooking methoddietary recordfood frequency questionnairevalidity

Identifiers

PMID29806636
PMCPMC6242785
OpenAlexW2803319504

What OpenQuestion holds

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LicenceCC BY
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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.