Evidence map›Paper›PMID 28294086›Full record

ArticlePublic health nutrition2017

School lunches in Japan: their contribution to healthier nutrient intake among elementary-school and junior high-school children.

Keiko Asakura, Satoshi Sasaki

Open access · bronzeAbstract read
In one paragraph

Article in Public health nutrition, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
6.4field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

  1. Pooled it
  2. Systems-Based Dialogue With Secondary School Students to Explore School Food Environments That Promote Healthy People and Planet.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2026
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  11. Letter to the editor: willingnessPublic health nutrition · 2024
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  19. Observational
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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

2 authors at 2 institutions in 1 country.

Keiko Asakura1Department of Environmental and Occupational Health,School of Medicine,Toho University,Tokyo,Japan.
Satoshi Sasaki2Department of Social and Preventive Epidemiology,School of Public Health,The University of Tokyo,7-3-1 Hongo, Bunkyo-ku,Tokyo 113-0033,Japan.
The University of Tokyo · JPToho University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe role of school lunches in diet quality has not been well studied. Here, we aimed to determine the contribution of school lunches to overall nutrient intake in Japanese schoolchildren.

designThe study was conducted nationwide under a cross-sectional design. A non-consecutive, three-day diet record was performed on two school days and a non-school day separately. The prevalence of inadequate nutrient intake was estimated for intakes on one of the school days and the non-school day, and for daily habitual intake estimated by the best-power method. The relationship between food intake and nutrient intake adequacy was examined.

settingFourteen elementary and thirteen junior high schools in Japan. SUBJECTS: Elementary-school children (n 629) and junior high-school children (n 281).

resultsIntakes between the school and non-school days were significantly different for ≥60 % of nutrients. Almost all inadequacies were more prevalent on the non-school day. Regarding habitual intake, a high prevalence of inadequacy was observed for fat (29·9-47·7 %), dietary fibre (18·1-76·1 %) and salt (97·0-100 %). Inadequate habitual intake of vitamins and minerals (except Na) was infrequent in elementary-school children, but was observed in junior high-school children, particularly boys.

conclusionsSchool lunches appear to improve total diet quality, particularly intake of most vitamins and minerals in Japanese children. However, excess intakes of fat and salt and insufficient intake of dietary fibre were major problems in this population. The contribution of school lunches to improving the intakes of these three nutrients was considered insufficient.

Indexed as

Diet, HealthyFood ServicesAdolescentChildChild BehaviorCross-Sectional StudiesDietary CarbohydratesDietary FatsDietary FiberDietary ProteinsDiet RecordsExerciseFemaleHealth BehaviorHumansJapanDietary CarbohydratesDietary FatsDietary FiberDietary ProteinsMicronutrientsDiet qualityJapanNutrient intakeSchoolchildrenSchool lunch

Identifiers

PMID28294086
PMCPMC10261553
OpenAlexW2603884093

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.