Evidence map›Paper›PMID 23596520›Full record

ArticlePloS one2013

The association of 25 hydroxyvitamin D and parathyroid hormone with metabolic syndrome in two ethnic groups in South Africa.

Jaya A George, Shane A Norris, Hendrik Emmanuel van Deventer, Nigel J Crowther

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
3.6field-weighted citation impact, top 7% 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 47 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Osteoporosis in Africa-where are we now.Clinical rheumatology · 2021
    Review
  10. Article
  11. Article
  12. Observational
  13. Article
  14. High phosphate diet suppresses lipogenesis in white adipose tissue.Journal of clinical biochemistry and nutrition · 2018
    Article
  15. Article
  16. Article
  17. Article
  18. Special considerations for vitamin D in the south Asian population in the UK.Therapeutic advances in musculoskeletal disease · 2017
    Review
  19. Article
  20. Vitamin D Status and Its Consequences for Health in South Africa.International journal of environmental research and public health · 2016
    Review
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

4 authors at 3 institutions in 1 country.

Jaya A GeorgeDepartment of Chemical Pathology, National Health Laboratory Service and University of the Witwatersrand, Parktown, Johannesburg, South Africa. jaya.george@wits.ac.za
Shane A Norris
Hendrik Emmanuel van Deventer
Nigel J Crowther
National Health Laboratory Service · ZALancet Laboratories · ZAUniversity of the Witwatersrand · ZA

Funding

Medical Research Council G1001333
6 · The paper itself

Abstract

introductionThough inconsistent, a number of studies have shown an association between vitamin D (25(OH)D) status, parathyroid hormone (PTH) and the metabolic syndrome (Met S). These have largely been carried out in Caucasians or black subjects living in high income countries. There no data on the relationship of 25(OH)D and PTH status with Met S in populations resident in Africa. The aims of this study were to evaluate if there was an association of 25(OH)D or PTH with Met S in non-Caucasian populations in South Africa, and whether these molecules explained ethnic differences in the prevalence of Met S and its individual components.

methodsWe measured anthropometry, serum 25(OH)D and PTH levels and the components of Met S, plus related metabolic variables, in 374 African and 350 Asian Indian healthy adults from the greater Johannesburg metropolitan area.

resultsMet S was diagnosed in 29% of the African and 46% of the Asian Indian subjects (p<0.0001). Subjects with Met S had higher PTH than those without Met S, (p<0.0001), whilst 25(OH)D levels were not significantly different (p = 0.50). In multivariate analysis, 25(OH)D was not associated with any components of the Met S however PTH was shown to be positively associated with systolic (p = 0.018) and diastolic (p = 0.005) blood pressures and waist circumference (p<0.0001) and negatively associated with HOMA (p = 0.0008) levels. Logistic regression analysis showed that Asian Indian ethnicity (OR 2.24; 95% CIs 1.57, 3.18; p<0.0001) and raised PTH (OR 2.48; 95% CIs 1.01, 6.08; p = 0.04; adjusted for 25(OH)D) produced an increased risk of Met S but 25(OH)D did not (OR 1.25; 95% CI 0.67, 2.24; p = 0.48).

conclusionsPlasma PTH but not 25(OH)D is an independent predictor of the Met S in African and Asian Indians in South Africa.

Indexed as

AdultCross-Sectional StudiesFemaleHumansMaleMetabolic SyndromeMiddle AgedParathyroid HormonePrevalenceRiskSouth AfricaVitamin D25-hydroxyvitamin DParathyroid HormoneVitamin D

Identifiers

PMID23596520
PMCPMC3626636
OpenAlexW2042373035

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.