SynthesisJournal of clinical hypertension (Greenwich, Conn.)2013

Antihypertensive effects of statins: a meta-analysis of prospective controlled studies.

Alexandros Briasoulis, Vikram Agarwal, Antonis Valachis, Franz H Messerli

Open access · bronzeAbstract readMeta-Analysis
In one paragraph

Synthesis in Journal of clinical hypertension (Greenwich, Conn.), 2013. The graph read 1 number from its abstract, feeding 1 cell of the map, but none could be read as for or against, so it casts no vote. Cited by 39 papers, 4 of them syntheses that pooled it.

1number the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 4 pooled it
10.8field-weighted citation impact, top 1% 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.

Read, but not usablea number the graph found but could not read as for or against

Blood pressurecomparator not stated · hypertension, dyslipidemiafeeds one cell of the map
decrease -2.62-3.41 to -1.84P<.001
Mean SBP in the statin group decreased by 2.62 mm Hg (95% confidence interval [CI], -3.41 to -1.84; P<.001) and DBP by 0.94 mm Hg (95% CI, -1.31 to -0.57; P<.001).

clause the extractor read what became the number

2 · Its place on the map

Where it lands on the map

Rows are treatments, columns are outcomes. The coloured squares are the cells this paper feeds, coloured by the vote it casts there. Click one to jump to what this paper adds to it.

supports the treatmentfavours the comparatorno clear differenceread, but no usable result
3 · What it changes

What it adds to each cell

For every cell the paper feeds: the belief in the claim with and without this paper, and this paper's estimate drawn against every other readable study in the cell. The ringed dot is this paper.

Statins×blood pressure

No readable resultOpen on the map →What to test next →

8 readable studies in this cell: 3 favour the treatment, 4 find no difference, 1 favour the comparator.

Belief with this paper
0.80replicated · 4 families support, 1 contradict · against placebo
Without itNot a counted family in this claim, so removing it changes nothing.
← favours the comparatorfavours the treatment →
1 · no effect

This paper's own estimate is on a different scale from the rest of the cell, so it is not drawn here.

4 · 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.

5 · Its place in the literature

Who cites it

39 citing papers in PubMed, 4 syntheses or guidelines pooled it, 95 citations in OpenAlex.

  1. Pooled it
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  4. The effect of statins on sympathetic activity: a meta-analysis.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2015
    Pooled it
  5. Trial
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6 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

7 · Who and what money

Authors and funding

4 authors at 3 institutions in 2 countries.

Alexandros BriasoulisDepartment of Medicine, ASH Comprehensive Hypertension Center, University of Chicago Medicine, Chicago, IL, USA.
Vikram Agarwal
Antonis Valachis
Franz H Messerli
Columbia University · USUniversity of Chicago · USUppsala University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

8 · The paper itself

Abstract

The marked sentences are the ones the graph read a number from.

In experimental studies, statins have been shown to lower blood pressure through increased nitric oxide bioavailability and improved arterial compliance. The clinical significance of this effect remains poorly documented. The authors performed a meta-analysis of the effect of statins on systolic blood pressure (SBP) and diastolic blood pressure (DBP) including prospective randomized, controlled trials of statin therapy. EMBASE and MEDLINE searches for studies in which patients were randomized to treatment with a statin plus standard treatment (or placebo) vs standard treatment (or placebo) were conducted. Studies that provided data on SBP and DBP values before the initiation of the treatment and at the end of the follow-up period were included. A total of 40 studies with 51 comparison groups examining 22,511 controls and 22,602 patients taking statins were examined. Mean SBP in the statin group decreased by 2.62 mm Hg (95% confidence interval [CI], -3.41 to -1.84; P<.001) and DBP by 0.94 mm Hg (95% CI, -1.31 to -0.57; P<.001). In studies including hypertensive patients, the decrease in blood pressures with statins was slightly greater (SBP, -3.07 mm Hg; 95% CI, -4.00 to -2.15 and DBP, 1.04; 95% CI, -1.47 to -0.61). Similarly, statins effectively reduced SBP in diabetic patients. In this large meta-analysis of prospective controlled studies, the authors found a small but statistically significant reduction of SBP in patients taking statins. The decrease in blood pressure may contribute to the pleiotropic effect of statins in reducing cardiovascular risk.

Indexed as

Antihypertensive AgentsBlood PressureHumansHydroxymethylglutaryl-CoA Reductase InhibitorsHypercholesterolemiaHypertensionProspective StudiesRandomized Controlled Trials as TopicAntihypertensive AgentsHydroxymethylglutaryl-CoA Reductase Inhibitors

Identifiers

PMID23614844
PMCPMC8033902
OpenAlexW2015995918

What OpenQuestion holds

Texttitle and abstract
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.