Evidence map›Paper›PMID 27222154›Full record

ArticleEuropean journal of clinical nutrition2016

Decreased serum vitamin D levels in early spontaneous pregnancy loss.

W Hou, X-T Yan, C-M Bai, X-W Zhang, L-Y Hui, X-W Yu

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in European journal of clinical nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03327766 (Assesment of Vit D3 Level in Cases of Unexplaind Pregnancy Loss in Assiut), which is not on this map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
5.7field-weighted citation impact, top 4% 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.

NCT03327766 unknown statusnot on this mapstarted 2017, after this paper: background citation

Assesment of Vit D3 Level in Cases of Unexplaind Pregnancy Loss in Assiut

TypeobservationalSponsorWoman's Health University Hospital, EgyptRan2017 to 2018Enrolled100ConditionsvitD3 Level in Cases of Recuurent Pregnancy LossArms4-Measurment of serum 25(OH)D3 using Vidas by ELFA meathod.
3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Vitamin D and Intrauterine Growth Restriction (IUGR).International journal of molecular sciences · 2025
    Review
  5. Article
  6. Reducing early pregnancy loss with vitamin DJournal of clinical biochemistry and nutrition · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Pregnancy, Breastfeeding, and Vitamin D.International journal of molecular sciences · 2023
    Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Observational
  20. Relationship BetweenInternational journal of general medicine · 2020
    Article
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 2 institutions in 1 country.

W HouDepartment of Obstetrics & Gynecology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
X-T YanDepartment of Obstetrics & Gynecology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
C-M BaiDepartment of Maternal Health Care, Maternal and Child Health Hospital of Shaanxi Province, Xi'an, China.
X-W ZhangDepartment of Obstetrics & Gynecology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
L-Y HuiLaboratory Department, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
X-W YuDepartment of Obstetrics & Gynecology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
First Affiliated Hospital of Xi'an Jiaotong University · CNNorthwest Women's and Children's Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

objectivesEffects of vitamin D deficiency in pregnancy have been associated with some adverse pregnancy outcomes. The objective of this study was to analyze the relationship between vitamin D deficiency in childbearing aged women and pregnancy loss (PL) in the first trimester. SUBJECTS/

methodsThis is a cross-sectional study. Plasma was collected from 60 nulliparous women with singleton at 7-9 weeks of gestation (30 with viable gestation and 30 with PL) and 60 non-gravid childbearing aged women (30 with a successful pregnancy history, and 30 with one or more spontaneous first-trimester PL history). Quantitation of serum 25-hydroxyvitamin D (25(OH)D) and 25-hydroxyvitamin D-1 alpha hydroxylase (CYP27B1) was assayed.

resultsBy pregnancy/non-gravid, normal pregnant women had higher 25(OH)D (49.32 μg/l) and CYP27B1 (82.00 pg/ml) than PL women (34.49 μg/l and 37.87 pg/ml, both P<0.01); the non-gravid women with a successful pregnancy history also had higher 25(OH)D (39.56 μg/l) and CYP27B1 (39.04 pg/ml) than women with PL history (12.30 μg/l and 12.35 pg/ml, both P<0.01). The 96.7% of non-gravid women with PL history and 43.3% of PL women had serum 25(OH)D concentrations below 30 μg/l. There was a strong association between low vitamin D levels and PL (odds ratio 1.71; 95% confidence interval: 1.2-2.4, P<0.001). The regression analyses showed that PL was significantly inversely correlated with 25(OH)D (P<0.01) and CYP27B1 levels (P<0.01).

conclusionsVitamin D deficiency associated with PL in the first trimester of pregnancy. Decreased serum vitamin D levels among childbearing aged women with the failed clinical pregnancies history may predispose to increased risk for PL.

Indexed as

Pregnancy Outcome25-Hydroxyvitamin D3 1-alpha-HydroxylaseAbortion, SpontaneousAdultCase-Control StudiesCross-Sectional StudiesFemaleGestational AgeGravidityHumansOdds RatioParityPregnancyPregnancy ComplicationsVitamin DVitamin D Deficiency25-hydroxyvitamin D25-Hydroxyvitamin D3 1-alpha-HydroxylaseVitamin D

Identifiers

PMID27222154
PMCPMC5023787
OpenAlexW2402812708

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LicenceCC BY-NC-ND
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Registered trials

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.