Evidence map›Paper›PMID 19116232›Full record

ArticleThe Journal of clinical endocrinology and metabolism2009

Estimated maternal ultraviolet B exposure levels in pregnancy influence skeletal development of the child.

Adrian Sayers, Jonathan H Tobias

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical endocrinology and metabolism, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 3 pooled it
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

38 citing papers in PubMed, 3 syntheses or guidelines pooled it, 102 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Vitamin D, and Maternal and Child Health.Calcified tissue international · 2020
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Global Consensus Recommendations on Prevention and Management of Nutritional Rickets.The Journal of clinical endocrinology and metabolism · 2016
    Review
  20. 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

2 authors at 2 institutions in 1 country.

Adrian SayersAcademic Rheumatology, Department of Clinical Science at North Bristol, University of Bristol, Bristol BS2 8HW, United Kingdom. Jon.Tobias@bristol.ac.uk.
Jonathan H Tobias
North Bristol NHS Trust · GBUniversity of Bristol · GB

Funding

Medical Research Council G9815508Wellcome Trust 079960
6 · The paper itself

Abstract

contextRelationships between vitamin D exposure of the mother in pregnancy and skeletal development of the child are poorly understood.

objectivesOur objectives were to establish whether background UVB levels in the third trimester of pregnancy are related to bone mineral content (BMC) of the child, and to examine whether these relationships are explained by effects on height, fat, or lean mass.

designThis was a prospective cohort study.

settingThe Avon Longitudinal Study of Parents and Children, a population-based birth cohort, was studied.

participantsA total of 6995 boys and girls with a mean age of 9.9 yr was studied. OUTCOME MEASURES: Prespecified analyses of relationships between background UVB levels in the third trimester of pregnancy, and total body less head BMC, bone area (BA), bone mineral density, and area-adjusted BMC as measured by dual-energy x-ray absorptiometry scans at 9.9 yr were performed.

resultsMaternal UVB exposure was positively related to BMC (g) [9.6 (5.3, 13.8)], BA (cm(2)) [8.1 (4.3, 11.9)], and bone mineral density (g/cm(-2)) [0.003 (0.001, 0.004)], but not area-adjusted BMC (g) [0.69 (-0.22, 1.56)], suggesting an effect on bone size. Both height-dependent (cm) [0.18 (0.03, 0.32)] and height-independent (cm(2)) [4.1, (2.0, 6.2)] effects contributed to this association between UVB and BA. Although maternal UVB exposure was also related to lean mass (g) [163 (89, 237)], a positive association between UVB and BA persisted after adjusting for both height and lean mass [2.8 (1.0, 4.6)].

conclusionsMaternal UVB exposure is related to bone size at age 9.9 yr independently of height and lean mass, suggesting that vitamin D status in pregnancy exerts direct effects on periosteal bone formation in subsequent childhood.

Indexed as

Bone DensityBone DevelopmentChildCohort StudiesFemaleFetusHumansLinear ModelsMalePregnancyProspective StudiesUltraviolet RaysVitamin DVitamin D

Identifiers

PMID19116232
PMCPMC2742727
OpenAlexW2099815636

What OpenQuestion holds

Textmetadata
LicenceTDM
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.