Evidence map›Paper›PMID 26399867›Full record

ArticleThe American journal of clinical nutrition2015

Tracking of 25-hydroxyvitamin D status during pregnancy: the importance of vitamin D supplementation.

Rebecca J Moon, Sarah R Crozier, Elaine M Dennison, Justin H Davies, Sian M Robinson, Hazel M Inskip, Keith M Godfrey, Cyrus Cooper, Nicholas C Harvey

Abstract read
In one paragraph

Article in The American journal of clinical nutrition, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

31 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  12. Tracking of serum 25-hydroxyvitamin D during 21 years.European journal of clinical nutrition · 2021
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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

9 authors.

Rebecca J MoonMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom; Paediatric Endocrinology, University Hospital Southampton National Health Service (NHS) Foundation Trust, Southampton, United Kingdom;
Sarah R CrozierMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom;
Elaine M DennisonMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom;
Justin H DaviesPaediatric Endocrinology, University Hospital Southampton National Health Service (NHS) Foundation Trust, Southampton, United Kingdom;
Sian M RobinsonMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom;
Hazel M InskipMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom;
Keith M GodfreyMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom; National Institute for Health Research (NIHR) Southampton Nutrition Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; and.
Cyrus CooperMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom; National Institute for Health Research (NIHR) Southampton Nutrition Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; and cc@mrc.soton.ac.uk.
Nicholas C HarveyMedical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, United Kingdom; National Institute for Health Research (NIHR) Southampton Nutrition Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; and.

Funding

Arthritis Research UK 17702British Heart Foundation RG/07/009/23120Department of Health 10/33/04Department of Health HTA/10/33/04Department of Health SOUDIBRU-2008-1Medical Research Council G0400491Medical Research Council MC_U147574218Medical Research Council MC_U147574222Medical Research Council MC_U147574226Medical Research Council MC_U147585819Medical Research Council MC_U147585824Medical Research Council MC_U147585827Medical Research Council MC_UP_A620_1014Medical Research Council MC_UP_A620_1015Medical Research Council MC_UP_A620_1017Medical Research Council MC_UU_12011/1Medical Research Council MC_UU_12011/2Medical Research Council MC_UU_12011/4Medical Research Council MR/J000094/1Versus Arthritis 17702
6 · The paper itself

Abstract

backgroundThe role of maternal 25-hydroxyvitamin D [25(OH)D] in fetal development is uncertain, and findings of observational studies have been inconsistent. Most studies have assessed 25(OH)D only one time during pregnancy, but to our knowledge, the tracking of an individual's 25(OH)D during pregnancy has not been assessed previously.

objectiveWe determined the tracking of serum 25(OH)D from early to late pregnancy and factors that influence this.

designThe Southampton Women's Survey is a prospective mother-offspring birth-cohort study. Lifestyle, diet, and 25(OH)D status were assessed at 11 and 34 wk of gestation. A Fourier transformation was used to model the seasonal variation in 25(OH)D for early and late pregnancy separately, and the difference between the measured and seasonally modeled 25(OH)D was calculated to generate a season-corrected 25(OH)D. Tracking was assessed with the use of the Pearson correlation coefficient, and multivariate linear regression was used to determine factors associated with the change in season-corrected 25(OH)D.

resultsA total of 1753 women had 25(OH)D measured in both early and late pregnancy. There was a moderate correlation between season-corrected 25(OH)D measurements at 11 and 34 wk of gestation (r = 0.53, P < 0.0001; n = 1753). Vitamin D supplementation was the strongest predictor of tracking; in comparison with women who never used supplements, the discontinuation of supplementation after 11 wk was associated with a reduction in season-corrected 25(OH)D (β = -7.3 nmol/L; P < 0.001), whereas the commencement (β = 12.6 nmol/L; P < 0.001) or continuation (β = 6.6 nmol/L; P < 0.001) of supplementation was associated with increases in season-corrected 25(OH)D. Higher pregnancy weight gain was associated with a reduction in season-corrected 25(OH)D (β = -0.4 nmol · L(-1) · kg(-1); P = 0.015), whereas greater physical activity (β = 0.4 nmol/L per h/wk; P = 0.011) was associated with increases.

conclusionsThere is a moderate tracking of 25(OH)D status through pregnancy; factors such as vitamin D supplementation, weight gain, and physical activity are associated with changes in season-corrected 25(OH)D from early to late gestation. These findings have implications for study designs and analyses and approaches to intervention studies and clinical care.

Indexed as

Dietary SupplementsMaternal Nutritional Physiological PhenomenaModels, BiologicalNutritional Status25-Hydroxyvitamin D 2AdultCalcifediolCohort StudiesEnglandFemaleFourier AnalysisHumansLongitudinal StudiesPregnancyPregnancy ComplicationsPregnancy Maintenance25-Hydroxyvitamin D 2CalcifediolVitamin Depidemiologyosteoporosispregnancysupplementationtrackingvitamin D

Identifiers

PMID26399867
PMCPMC4634223

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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.