Evidence map›Paper›PMID 25364520›Full record

ArticleJournal of thoracic disease2014

The role of red blood cell distribution width in mortality and cardiovascular risk among patients with coronary artery diseases: a systematic review and meta-analysis.

Chang Su, Li-Zhen Liao, Yan Song, Zhi-Wei Xu, Wei-Yi Mei

Abstract read
In one paragraph

Article in Journal of thoracic disease, 2014. 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
–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

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

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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

5 authors.

Chang Su1 Department of Hematology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China ; 2 Department of Health, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou 510080, China ; 3 Department of Pathophysiology, ZhongShan Medical College, Sun Yat-sen University, Guangzhou 510080, China ; 4 Department of Cardiology, Huangpu Division of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China.
Li-Zhen Liao1 Department of Hematology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China ; 2 Department of Health, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou 510080, China ; 3 Department of Pathophysiology, ZhongShan Medical College, Sun Yat-sen University, Guangzhou 510080, China ; 4 Department of Cardiology, Huangpu Division of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China.
Yan Song1 Department of Hematology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China ; 2 Department of Health, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou 510080, China ; 3 Department of Pathophysiology, ZhongShan Medical College, Sun Yat-sen University, Guangzhou 510080, China ; 4 Department of Cardiology, Huangpu Division of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China.
Zhi-Wei Xu1 Department of Hematology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China ; 2 Department of Health, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou 510080, China ; 3 Department of Pathophysiology, ZhongShan Medical College, Sun Yat-sen University, Guangzhou 510080, China ; 4 Department of Cardiology, Huangpu Division of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China.
Wei-Yi Mei1 Department of Hematology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China ; 2 Department of Health, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou 510080, China ; 3 Department of Pathophysiology, ZhongShan Medical College, Sun Yat-sen University, Guangzhou 510080, China ; 4 Department of Cardiology, Huangpu Division of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRed cell distribution width (RDW) might be a novel biomarker that reflects multiple physiological impairments related to atherosclerosis and coronary artery diseases (CAD). We conducted this systematic review and meta-analysis to evaluate the association of RDW between all-cause mortality and fatal/non-fatal cardiovascular disease (CVD) events in CAD patients.

methodsRelevant studies were searched and identified in the MEDLINE and EMBASE databases. English-language prospective studies that reported risk estimates for RDW and mortality/CVD events were included. Data were extracted regarding the characteristics and clinical outcomes, and a quality assessment was conducted. Results were extracted for the highest versus lowest RDW level, and meta-analyses were carried out using random effects models.

resultsWe identified 22 studies enrolling 80,216 participants. The study duration ranged between 1 month and 23 years. Of the 15 studies that were included in the meta-analysis, higher RDW indicated a significant increased risk for all-cause mortality in CAD patients: pooled risk ratio (RR) 2.20 (95% CI, 1.42-3.39; P<0.0004). The results for fatal, non-fatal and fatal/non-fatal events were: pooled RR 1.80 (95% CI, 1.35-2.41; P<0.0001), RR 1.86 (95% CI, 1.50-2.31; P<0.00001) and RR 2.13 (95% CI, 1.20-3.77; P=0.01). Heterogeneity was moderately present; however, sensitivity analyses for follow-up duration, CAD subtype, or RDW as dichotomous values showed similar results.

conclusionsThe meta-analysis indicates that higher RDW levels are associated with increased risk of mortality and CVD events in patients with established CAD.

Indexed as

cardiovascular (CV)coronary artery diseases (CAD)meta-analysismortalityRed cell distribution width (RDW)

Identifiers

PMID25364520
PMCPMC4215144

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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.