Trial reportJournal of clinical lipidology

Preventive effect of pravastatin on the development of hypertension in patients with hypercholesterolemia: A post-hoc analysis of the Management of Elevated Cholesterol in the Primary Prevention Group of Adult Japanese (MEGA) Study.

Toshiaki Otsuka, Kyoichi Mizuno, Tomohiro Shinozaki, Yuko Kachi, Haruo Nakamura

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Journal of clinical lipidology. The graph read 1 number from its abstract, feeding 1 cell of the map: it . Cited by 4 papers.

1number the graph read from it
1cell of the map it votes in
4citing papers in PubMed
1.5field-weighted citation impact, top 18% 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.

← favours the treatmentfavours the comparator →
1 · no effect
Blood pressurefavours the treatment · head-to-head · hypertension, dyslipidemiafeeds one cell of the map
HR 0.900.81 to 1.00
After adjusting for multiple covariates, the diet plus pravastatin group showed a 10% reduction in the risk of developing hypertension (hazard ratio 0.90, 95% confidence interval 0.81-0.998), compared with the diet alone group.

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 treatmentfavours the comparator →
1 · no effect
This paper
HR 0.900.81 to 1.00
NCT03944512102 enrolled · 2019
RR 3.000.32 to 77.2
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

4 citing papers in PubMed, 6 citations in OpenAlex.

  1. Review
  2. Can atherosclerosis be cured?Current opinion in lipidology · 2019
    Review
  3. Article
  4. Review
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

5 authors at 4 institutions in 1 country.

Toshiaki OtsukaDepartment of Hygiene and Public Health, Nippon Medical School, Tokyo, Japan; Center for Clinical Research, Nippon Medical School Hospital, Tokyo, Japan. Electronic address: otsuka@nms.ac.jp.
Kyoichi MizunoMitsukoshi Health and Welfare Foundation, Tokyo, Japan.
Tomohiro ShinozakiDepartment of Biostatistics, School of Public Health, The University of Tokyo, Tokyo, Japan.
Yuko KachiDepartment of Hygiene and Public Health, Nippon Medical School, Tokyo, Japan.
Haruo NakamuraMitsukoshi Health and Welfare Foundation, Tokyo, Japan.
Mitsukoshi Health and Welfare Foundation · JPNippon Medical School · JPNippon Medical School Hospital · JPThe University of Tokyo · JP

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.

backgroundIt remains unclear whether treatment of dyslipidemia with 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase inhibitors (statins) reduces the risk of developing hypertension.

objectiveIn this post-hoc analysis of the Management of Elevated Cholesterol in the Primary Prevention Group of Adult Japanese (MEGA) Study, a large-scale primary prevention trial with pravastatin, we examined the preventive effect of pravastatin on the future development of hypertension in patients with hypercholesterolemia.

methodsOf the overall (MEGA) Study population, 3397 nonhypertensive patients at baseline were enrolled in this study. The patients were randomly assigned to either the diet alone group (n = 1722) or the diet plus pravastatin group (n = 1675) and then were followed-up for a median of 36 months to determine new-onset hypertension.

resultsDuring the follow-up period, 1595 patients developed hypertension (49.1% in the diet alone group and 44.7% in the diet plus pravastatin group). After adjusting for multiple covariates, the diet plus pravastatin group showed a 10% reduction in the risk of developing hypertension (hazard ratio 0.90, 95% confidence interval 0.81-0.998), compared with the diet alone group. Subgroup analyses revealed that the preventive effect of pravastatin on the development of hypertension was pronounced in patients aged ≥60 years, men, those with chronic kidney disease or diabetes mellitus and those without obesity.

conclusionsPravastatin reduced the risk of developing hypertension in Japanese patients with hypercholesterolemia. The risk reduction of cardiovascular disease with statins could be partly explained by their preventive effect on the development of hypertension.

Indexed as

AdultBlood PressureFemaleFollow-Up StudiesHumansHypercholesterolemiaHypertensionJapanMaleMiddle AgedPravastatinPravastatinCholesterolHypertension riskMEGA studyPravastatinPreventionRandomized controlled trial

Identifiers

PMID28655522
OpenAlexW2621812057

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Texttitle and abstract
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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.