Evidence mapPaperPMID 19252811Full record

Trial reportJournal of neurology2009

Effects of statins on the progression of cerebral white matter lesion: Post hoc analysis of the ROCAS (Regression of Cerebral Artery Stenosis) study.

Vincent C T Mok, Wynnie W M Lam, Yu Hua Fan, Adrian Wong, Ping Wing Ng, Tak Hon Tsoi, Vincent Yeung, Ka Sing Wong

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Journal of neurology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
3.3field-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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 107 citations in OpenAlex.

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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

8 authors at 5 institutions in 1 country.

Vincent C T MokDepartment of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China. vctmok@cuhk.edu.hk
Wynnie W M Lam
Yu Hua Fan
Adrian Wong
Ping Wing Ng
Tak Hon Tsoi
Vincent Yeung
Ka Sing Wong
Chinese University of Hong Kong · CNOur Lady of Maryknoll Hospital · CNPamela Youde Nethersole Eastern Hospital · CNThe First Affiliated Hospital, Sun Yat-sen University · CNUnited Christian Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Arteriosclerotic related cerebral white matter lesion (WML) is associated with increased risk of death, stroke, dementia, depression, gait disturbance, and urinary incontinence. We investigated the effects of statins on WML progression by performing a post hoc analysis on the ROCAS (Regression of Cerebral Artery Stenosis) study, which is a randomized, double-blind, placebo-controlled study evaluating the effects of statins upon asymptomatic middle cerebral artery stenosis progression among stroke-free individuals. Two hundreds and eight randomized subjects were assigned to either placebo (n = 102) or simvastatin 20 mg daily (n = 106) for 2 years. Baseline severity of WML was graded visually into none, mild, and severe. Volume (cm3) of WML was determined quantitatively at baseline and at end of study using a semi-automated method based on MRI. Primary outcome was the change in WML volume over 2 years. After 2 years of follow-up, there was no significant change in WML volume between the active and the placebo group as a whole. However, stratified analysis showed that for those with severe WML at baseline, the median volume increase in the active group (1.9 cm3) was less compared with that in the placebo group (3.0 cm3; P = 0.047). Linear multivariate regression analysis identified that baseline WML volume (beta = 0.63, P < 0.001) and simvastatin treatment (beta = -0.214, P = 0.043) independently predicted change in WML volume. Our findings suggest that statins may delay the progression of cerebral WML only among those who already have severe WML at baseline.

Indexed as

AgedBrain MappingCerebral ArteriesCerebral CortexDementia, VascularDisease ProgressionDouble-Blind MethodFemaleHumansHydroxymethylglutaryl-CoA Reductase InhibitorsImage Processing, Computer-AssistedInfarction, Middle Cerebral ArteryIntracranial ArteriosclerosisMagnetic Resonance ImagingMaleMiddle AgedHydroxymethylglutaryl-CoA Reductase InhibitorsPlacebosSimvastatin

Identifiers

PMID19252811
OpenAlexW1484757239

What Socratic holds

Textmetadata
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 Socratic graph.