Evidence map›Paper›PMID 23483932›Full record

SynthesisPloS one2013

The effects of calcium channel blockers in the prevention of stroke in adults with hypertension: a meta-analysis of data from 273,543 participants in 31 randomized controlled trials.

Gui Jv Chen, Mao Sheng Yang

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 7 pooled it
2.8field-weighted citation impact, top 8% 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

25 citing papers in PubMed, 7 syntheses or guidelines pooled it, 47 citations in OpenAlex.

  1. Pooled it
  2. Calcium channel blockers versus other classes of drugs for hypertension.The Cochrane database of systematic reviews · 2022
    Pooled it
  3. Calcium channel blockers versus other classes of drugs for hypertension.The Cochrane database of systematic reviews · 2021
    Pooled it
  4. Profiling cerebrovascular function in migraine: A systematic review and meta-analysis.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Pooled it
  5. Practical clinical trials in psychopharmacology: a systematic review.Journal of clinical psychopharmacology · 2015
    Pooled it
  6. Pooled it
  7. Pooled it
  8. Article
  9. Review
  10. Article
  11. Review
  12. Secondary Ischemic Stroke Prevention.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  13. Neuroprotective effects of anExperimental and therapeutic medicine · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. New generations of dihydropyridines for treatment of hypertension.Journal of geriatric cardiology : JGC · 2017
    Review
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

2 authors at 1 institution in 1 country.

Gui Jv ChenLaboratory of Disorder Genes and Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, People's Republic of China.
Mao Sheng Yang
Chongqing Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHypertension is a major risk factor for the development of stroke. It is well known that lowering blood pressure decreases the risk of stroke in people with moderate to severe hypertension. However, the specific effects of calcium channel blockers (CCBs) against stroke in patients with hypertension as compared to no treatment and other antihypertensive drug classes are not known. METHODS AND

findingsThis systematic review and meta-analysis of randomized controlled trials (RCTs) evaluated CCBs effect on stroke in patients with hypertension in studies of CCBs versus placebo, angiotensin-converting-enzyme inhibitors (ACEIs), β-adrenergic blockers, and diuretics. The PUBMED, MEDLINE, EMBASE, OVID, CNKI, MEDCH, and WANFANG databases were searched for trials published in English or Chinese during the period January 1, 1996 to July 31, 2012. A total of 177 reports were collected, among them 31 RCTs with 273,543 participants (including 130,466 experimental subjects and 143,077 controls) met the inclusion criteria. In these trials a total of 9,550 stroke events (4,145 in experimental group and 5,405 in control group) were reported. CCBs significantly decreased the incidence of stroke compared with placebo (OR = 0.68, 95% CI 0.61-0.75, p<1×10(-5)), β-adrenergic blockers combined with diuretics (OR = 0.89, 95% CI 0.83-0.95, p = 7×10(-5)) and β-adrenergic blockers (OR = 0.79, 95% CI 0.72-0.87, p<1×10(-5)), statistically significant difference was not found between CCBs and ACEIs (OR = 0.92, 95% CI 0.8-1.02, p = 0.12) or diuretics (OR = 0.95, 95% CI 0.84-1.07, p = 0.39).

conclusionIn a pooled analysis of data of 31 RCTs measuring the effect of CCBs on stroke, CCBs reduced stroke more than placebo and β-adrenergic blockers, but were not different than ACEIs and diuretics. More head to head RCTs are warranted.

Indexed as

Randomized Controlled Trials as TopicAdrenergic beta-AntagonistsAdultAgedAngiotensin-Converting Enzyme InhibitorsAntihypertensive AgentsCalcium Channel BlockersConfidence IntervalsDiureticsHumansHypertensionMiddle AgedOdds RatioPlacebosStrokeAdrenergic beta-AntagonistsAngiotensin-Converting Enzyme InhibitorsAntihypertensive AgentsCalcium Channel BlockersDiureticsPlacebos

Identifiers

PMID23483932
PMCPMC3590278
OpenAlexW2090524160

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.