Evidence map›Paper›PMID 25973031›Full record

ArticleInternational journal of clinical and experimental pathology2015

High prevalence of maternal vitamin D deficiency in preterm births in northeast China, Shenyang.

Tong Zhu, Tian-Jing Liu, Xin Ge, Juan Kong, Li-Jun Zhang, Qun Zhao

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In one paragraph

Article in International journal of clinical and experimental pathology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 3 pooled it
4.4field-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

22 citing papers in PubMed, 3 syntheses or guidelines pooled it, 39 citations in OpenAlex.

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  11. Prevalence of vitamin D deficiency in the pregnant women: an observational study in Shanghai, China.Archives of public health = Archives belges de sante publique · 2020
    Article
  12. Maternal serum vitamin D levels and preterm delivery among low-risk parturients in Lagos, Nigeria.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2019
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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

6 authors at 2 institutions in 1 country.

Tong ZhuDepartment of Pediatric Orthopedic, Shengjing Hospital of China Medical University China.
Tian-Jing LiuDepartment of Pediatric Orthopedic, Shengjing Hospital of China Medical University China.
Xin GeLaboratory of Metabolic Disease Research and Drug Development, China Medical University China.
Juan KongDepartment of Clinical Nutrition, Shengjing Hospital of China Medical University China.
Li-Jun ZhangDepartment of Pediatric Orthopedic, Shengjing Hospital of China Medical University China.
Qun ZhaoDepartment of Pediatric Orthopedic, Shengjing Hospital of China Medical University China.
China Medical University · CNNational Medical Products Administration · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionMaternal vitamin D deficiency has been associated with a number of fetal and neonatal health problems. Preterm birth is one of the most detrimental, and the role of maternal vitamin D deficiency in preterm births has not been universally acknowledged. There had been limited epidemiological studies of vitamin D deficiency on the Chinese population. SUBJECTS AND

methods1103 women delivered in Shengjing Hospital, China Medical University from January 1(st), 2012 to January 1(st), 2013. Finally, 821 mother-newborn pairs which contained 143 mother-newborn pairs who were preterm delivery were recruited for analysis.

resultsThere was significant difference between spring and summer (P<0.0001) as well as spring and autumn (P<0.01). Compared to those in summer and autumn, the 25 (OH) D level was significantly lower in winter (summer vs winter P<0.0001, autumn vs winter P<0.0001). Maternal vitamin D level showed obvious variation with months and seasons, with higher level in summer months and lower level in winter months. There were significant difference between the vitamin D level of the very preterm group and the mildly preterm groups (P<0.01), as well as the very preterm group and the in-term groups (P<0.001). Prevalence of Vitamin D deficiency occurred in 63.04% of pregnant women in very preterm group, compared with 36.61% in in-term group.

conclusionVitamin D nutritional status of pregnant women and their newborns in Shenyang were relatively good compared to cities in similar latitudes. Vitamin D deficiency was most severe in late spring and least in summer. Severe preterm births before 31 weeks of gestation was associated with maternal vitamin D deficiency.

Indexed as

AdolescentAdultChinaEnzyme-Linked Immunosorbent AssayFemaleHumansMiddle AgedPregnancyPremature BirthPrevalenceSeasonsVitamin DVitamin D DeficiencyYoung AdultVitamin DpregnancypretermseasonSerum 25-hydroxyvitamin Dvitamin D deficiency

Identifiers

PMID25973031
PMCPMC4396334
OpenAlexW2415829987

What OpenQuestion holds

Textmetadata
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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.