Evidence map›Paper›PMID 34836430›Full record

ArticleNutrients2021

Prevalence and Determinants of Vitamin D Deficiency in 9595 Mongolian Schoolchildren: A Cross-Sectional Study.

Jorick Bater, Sabri Bromage, Tuyatsetseg Jambal, Enkhjargal Tsendjav, Enkhsaikhan Lkhagvasuren, Yanjmaa Jutmann, Adrian R Martineau, Davaasambuu Ganmaa

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 13% 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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
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  8. Article
  9. Multiple Sclerosis in Mongolia; the First Study Exploring Predictors of Disability and Depression in Mongolian MS Patients.Pathophysiology : the official journal of the International Society for Pathophysiology · 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

8 authors at 6 institutions in 3 countries.

Jorick BaterDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.ORCID 0000-0001-6442-8469
Sabri BromageDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.ORCID 0000-0002-6552-4871
Tuyatsetseg JambalT School of Industrial Technology, Mongolian University of Science & Technology, Ulaanbaatar 14210, Mongolia.
Enkhjargal TsendjavThe Mongolian Health Initiative, Ulaanbaatar 14210, Mongolia.
Enkhsaikhan LkhagvasurenMinistry of Health, Ulaanbaatar 14210, Mongolia.
Yanjmaa JutmannDepartment of Math and Statistics, University of North Carolina at Charlotte, Charlootte, NC 28223, USA.
Adrian R MartineauBlizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London E1 4NS, UK.
Davaasambuu GanmaaDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
Harvard University · USBrigham and Women's Hospital · USMongolian National University · MNMongolian University of Science and Technology · MNQueen Mary University of London · GBUniversity of North Carolina at Charlotte · US

Funding

NIH HHS NCT02276755
6 · The paper itself

Abstract

Population-based data relating to vitamin D status of children in Northeast Asia are lacking. We conducted a cross-sectional study to determine the prevalence and determinants of vitamin D deficiency in 9595 schoolchildren aged 6-13 years in Ulaanbaatar (UB), the capital city of Mongolia. Risk factors for vitamin D deficiency were collected by questionnaire, and serum 25-hydroxyvitamin D (25[OH]D) concentrations were measured using an enzyme-linked fluorescent assay, standardized and categorized as deficient (25[OH]D <10 ng/mL) or not. Odds ratios for associations between independent variables and risk of vitamin D deficiency were calculated using multivariate analysis with adjustment for potential confounders. The prevalence of vitamins D deficiency was 40.6% (95% CI 39.7% to 41.6%). It was independently associated with female gender (adjusted odds ratio [aOR] for girls vs. boys 1.23, 95% CI 1.11-1.35), month of sampling (aORs for December-February vs. June-November 5.28 [4.53-6.15], March-May vs. June-November 14.85 [12.46-17.74]), lower levels of parental education (P for trend <0.001), lower frequency of egg consumption (P for trend <0.001), active tuberculosis (aOR 1.40 [1.03-1.94]), household smoking (aOR 1.13 [1.02 to1.25]), and shorter time outdoors (P for trend <0.001). We report a very high prevalence of vitamin D deficiency among Mongolian schoolchildren, which requires addressing as a public health priority.

Indexed as

AdolescentChildCross-Sectional StudiesFemaleHumansMaleMongoliaMultivariate AnalysisNutritional StatusOdds RatioPrevalenceRandomized Controlled Trials as TopicRisk FactorsSchoolsSmokingSociodemographic Factors25-hydroxyvitamin DVitamin DdeterminantsfortificationMongoliaschoolchildrenserum 25(OH)Dvitamin D

Identifiers

PMID34836430
PMCPMC8625867
OpenAlexW3217328574

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.