Evidence map›Paper›PMID 30200421›Full record

ArticleNutrients2018

Plasma 25-Hydroxy Vitamin D Is Not Associated with Either Cognitive Function or Academic Performance in Adolescents.

Abdur Rahman, Abdullah Al-Taiar, Lemia Shaban, Reem Al-Sabah, Anwar Al-Harbi, Olusegun Mojiminiyi

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
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  14. Review
  15. Observational
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

6 authors at 1 institution in 1 country.

Abdur RahmanDepartment of Food Science and Nutrition, College of Life Sciences, Kuwait University, Box 5969, Safat 13060, Kuwait. abdurrahman.ahmad@ku.edu.kw.
Abdullah Al-TaiarDepartment of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Box 24923, Safat 13110, Kuwait. altaiar@hsc.edu.kw.
Lemia ShabanDepartment of Food Science and Nutrition, College of Life Sciences, Kuwait University, Box 5969, Safat 13060, Kuwait. dr.lemiashaban@gmail.com.
Reem Al-SabahDepartment of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Box 24923, Safat 13110, Kuwait. reem1@hsc.edu.kw.
Anwar Al-HarbiDepartment of Food Science and Nutrition, College of Life Sciences, Kuwait University, Box 5969, Safat 13060, Kuwait. a.n_a.m@hotmail.com.
Olusegun MojiminiyiDepartment of Pathology, Faculty of Medicine, Kuwait University, Box 24923, Safat 13110, Kuwait. segunade@yahoo.com.
Kuwait University · KW

Funding

Kuwait University WF02/13
6 · The paper itself

Abstract

Several observational studies have reported an association between low levels of vitamin D (VD) and poor cognition in adults, but there is a paucity of data on such an association in adolescents. We investigated the association between VD and cognitive function or academic achievement among 1370 adolescents, who were selected from public middle schools in Kuwait, using stratified multistage cluster random sampling with probability proportional to size. Plasma 25-hydroxy VD (25-OH-D) was measured using liquid chromatography-tandem mass spectrometry (LC-MS/MS). An age-adjusted standard score (ASC), calculated from Raven's Standard Progressive Matrices test, was used to evaluate cognitive function; academic achievements were extracted from the schools' records. Data on various covariates were collected from the parents through a self-administered questionnaire and from the adolescents using face-to-face interviews. 25-OH-D was weakly correlated positively with ASC (ρ = 0.06;

Indexed as

Academic PerformanceAdolescent BehaviorChild BehaviorCognitionAdolescentAge FactorsBiomarkersChildCross-Sectional StudiesFemaleHumansKuwaitMaleRisk FactorsVitamin DVitamin D Deficiency25-hydroxyvitamin DBiomarkersVitamin D25-hydroxyvitamin Dadolescentscognitive functionRaven’s Stranded Progressive Matricesschool performance

Identifiers

PMID30200421
PMCPMC6165454
OpenAlexW2889102029

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.