Evidence map›Paper›PMID 33737426›Full record

ArticleBMJ open2021

Cardiometabolic risk factors and early indicators of vascular dysfunction: a cross-sectional cohort study in South African adolescents.

Boitumelo Prescilla Letswalo, Karin Schmid-Zalaudek, Bianca Brix, Edna Ngoakoana Matjuda, Fabian Klosz, Natalie Obernhumer, Michael Gaisl, Godwill Azeh Engwa, Constance Sewani-Rusike, Per Morten Fredriksen and 2 more

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

16 citing papers in PubMed, 29 citations in OpenAlex.

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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

12 authors at 3 institutions in 3 countries.

Boitumelo Prescilla Letswalo *Department of Human Biology, Faculty of Health Sciences, Walter Sisulu University, Mthatha, Eastern Cape, South Africa.
Karin Schmid-Zalaudek *Physiology Division, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Graz, Austria.ORCID http://orcid.org/0000-0002-3422-0031
Bianca BrixPhysiology Division, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Graz, Austria.
Edna Ngoakoana MatjudaDepartment of Biological and Environmental Sciences, Faculty of Natural Sciences, Walter Sisulu University, Mthatha, Eastern Cape, South Africa.
Fabian KloszPhysiology Division, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Graz, Austria.
Natalie ObernhumerPhysiology Division, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Graz, Austria.
Michael GaislPhysiology Division, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Graz, Austria.
Godwill Azeh EngwaDepartment of Human Biology, Faculty of Health Sciences, Walter Sisulu University, Mthatha, Eastern Cape, South Africa.
Constance Sewani-RusikeDepartment of Human Biology, Faculty of Health Sciences, Walter Sisulu University, Mthatha, Eastern Cape, South Africa.
Per Morten FredriksenSchool of Health Sciences, Kristiania University College, Oslo, Norway.
Benedicta Nkeh-ChungagDepartment of Human Biology, Faculty of Health Sciences, Walter Sisulu University, Mthatha, Eastern Cape, South Africa.
Nandu GoswamiPhysiology Division, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Graz, Austria nandu.goswami@medunigraz.at.
Medical University of Graz · ATWalter Sisulu University · ZAHøyskolen Kristiania · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesPrevalence of child and adolescents' overweight and obesity in low- and middle-income countries has increased dramatically. Simultaneously, the incidence of pre-hypertension/hypertension is also increasing in children, which, in turn, predisposes these children to the risk of cardiovascular disease (CVD) in later life. The present study assessed cardiometabolic risk factors and early indicators of vascular dysfunction in adolescents from a low socio-economic rural area in South Africa.

designCross-sectional cohort study.

settingThe study was conducted in public schools in Mthatha, OR Tambo district municipality, Eastern Cape Province, South Africa.

participantsA total of 244 adolescents (188 females) of African ancestry aged 13-16 years were enrolled. PRIMARY AND SECONDARY OUTCOME MEASURES: Anthropometric and haemodynamic measures and pulse wave velocity (PWV) were related to overweight/obesity and hypertension. Blood markers of cardiometabolic syndrome were assessed as well as vascular function (via PWV).

resultsOne-third (33.0%) of the adolescents exceeded the age and sex-specific body mass index percentiles for overweight (≥85th) or obesity (>95th) with a prevalence of 61.1% pre-hypertensives in this group. Overweight/obesity and hypertension were associated with higher triglycerides (lean:overweight: 0.79<1.01 mmol/L; normotensive:hypertensive: 0.82<0.89 mmol/L). Fasting glucose was higher in hypertensive as compared to normotensive adolescents (4.85>4.69 mmol/L, p<0.05). PWV was elevated in 25.9% of the children and significantly correlated with asymmetric dimethylarginine and systolic blood pressure (p<0.001).

conclusionOverweight/obesity and hypertension show a high prevalence in rural South African youth. Almost half of the studied adolescents are at risk for developing CVD. The high association between cardiometabolic risk factors and PWV further suggests that hypertension in adolescents may promote the progression of CVD in adulthood. Early detection of those at risk and the implementation of preventive strategies in underprivileged young people is urgently needed to stop the progression of vascular damage and manifestation of CVD in rural African children.

Indexed as

HypertensionPulse Wave AnalysisAdolescentBlood PressureBody Mass IndexCardiometabolic Risk FactorsCohort StudiesCross-Sectional StudiesFemaleHumansMaleOverweightPrevalenceRisk FactorsSouth Africadiabetes & endocrinologyepidemiologyhypertensionpaediatric endocrinologyvascular medicine

Identifiers

PMID33737426
PMCPMC7978086
OpenAlexW3137465900

What Socratic holds

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LicenceCC BY-NC
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 Socratic graph.