Evidence map›Paper›PMID 32384501›Full record

ArticleMedicine2020

Vitamin D supplementation for nonalcoholic fatty liver disease in type 2 diabetes mellitus: A protocol for a systematic review and meta-analysis.

Shengju Wang, Baochao Cai, Xuke Han, Yang Gao, Xiaoran Zhang, Ruili Wang, Yuan Zhang, Qiu Chen

Open access · goldAbstract read
In one paragraph

Article in Medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 2 pooled it
1.7field-weighted citation impact, top 15% 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

7 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Review
  6. Article
  7. 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

8 authors at 2 institutions in 1 country.

Shengju WangDepartment of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072.
Baochao CaiEndocrinology Department, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing 314001.
Xuke HanDepartment of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072.
Yang GaoDepartment of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072.
Xiaoran ZhangDepartment of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072.
Ruili WangDiabetes Department, Jintang County Traditional Chinese Medicine Hospital, Chengdu 610400, PR China.
Yuan ZhangDepartment of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072.
Qiu ChenDepartment of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072.
Chengdu University of Traditional Chinese Medicine · CNFirst Hospital of Jiaxing · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNonalcoholic fatty liver disease (NAFLD) is strongly associated with type 2 diabetes mellitus (T2DM), and low vitamin D levels are positively associated with NAFLD and T2DM. But there is absence of convincing evidence-based medicine to confirm the efficacy of vitamin D supplementation for T2DM with NAFLD. Thus, we aimed to conduct this meta-analysis to summarize the efficacy of vitamin D supplementation for T2DM combined with NAFLD, and help to further clarify its beneficial action on diabetic patients with NAFLD.

methodsThe study only selects clinical randomized controlled trials of vitamin D supplementation for T2DM combined with NAFLD. We will search each database from the built-in until July 2020. The English literature mainly searches Cochrane Library, Pubmed, EMBASE, and Web of Science. While the Chinese literature comes from CNKI, CBM, VIP, and Wangfang database. Meanwhile, we will retrieve clinical trial registries and grey literature. Two researchers worked independently on literature selection, data extraction, and quality assessment. The dichotomous data is represented by relative risk (RR), and the continuous is expressed by mean difference (MD) or standard mean difference (SMD), eventually the data is synthesized using a fixed effect model (FEM) or a random effect model (REM) depending on the heterogeneity. The imaging markers of liver, biomarkers of hepatic steatosis, serological indexes of hepatic fibrosis, serum NAFLD liver fat score were evaluated as the main outcomes. While several secondary outcomes were also evaluated in this study. The statistical analysis of this meta-analysis was conducted by RevMan software version 5.3.

resultsThis meta-analysis will further determine the beneficial efficacy of vitamin D supplementation for T2DM combined with NAFLD.

conclusionThis study determines the positive efficacy of vitamin D supplementation for diabetic patients with NAFLD.

Indexed as

Dietary SupplementsBiomarkersDiabetes Mellitus, Type 2HumansLiver Function TestsMeta-Analysis as TopicNon-alcoholic Fatty Liver DiseaseRandomized Controlled Trials as TopicResearch DesignSystematic Reviews as TopicVitamin DBiomarkersVitamin D

Identifiers

PMID32384501
PMCPMC7220265
OpenAlexW3015094731

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.