Evidence map›Paper›PMID 26490089›Full record

Trial reportHypertension research : official journal of the Japanese Society of Hypertension2016

Effects of calcium channel blocker-based combinations on intra-individual blood pressure variability: post hoc analysis of the COPE trial.

Seiji Umemoto, Toshio Ogihara, Masunori Matsuzaki, Hiromi Rakugi, Yasuo Ohashi, Takao Saruta, Combination Therapy of Hypertension to Prevent Cardiovascular Events COPE Trial Group

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Hypertension research : official journal of the Japanese Society of Hypertension, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 10% 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

15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. The Japanese Society of Hypertension Guidelines for the management of elevated blood pressure and hypertension 2025 (JSH2025).Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Guideline
  2. The Japanese Society of Hypertension Guidelines for the Management of Hypertension (JSH 2019).Hypertension research : official journal of the Japanese Society of Hypertension · 2019
    Guideline
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Article
  9. Article
  10. Review
  11. Blood Pressure Variability and Therapeutic Implications in Hypertension and Cardiovascular Diseases.High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2019
    Review
  12. Article
  13. Seasonal blood pressure variation: implications for cardiovascular risk stratification.Hypertension research : official journal of the Japanese Society of Hypertension · 2018
    Review
  14. Review
  15. 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

7 authors at 5 institutions in 1 country.

Seiji UmemotoCenter for Clinical Research, Yamaguchi University Hospital, Yamaguchi, Japan.
Toshio OgiharaMorinomiya University of Medical Sciences, Osaka, Japan.
Masunori MatsuzakiYamaguchi University, Yamaguchi, Japan.
Hiromi RakugiDepartment of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan.
Yasuo OhashiDepartment of Integrated Science and Engineering for Sustainable Society, Faculty of Science and Engineering, Chuo University, Tokyo, Japan.
Takao SarutaKeio University, Tokyo, Japan.
Combination Therapy of Hypertension to Prevent Cardiovascular Events COPE Trial Group
Keio University · JPYamaguchi University Hospital · JPChuo University · JPMorinomiya University of Medical Sciences · JPYamaguchi University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Visit-to-visit blood pressure (BP) variability is an important predictor of stroke. However, which antihypertensive drug combination is better at reducing visit-to-visit BP variability and therefore at reducing stroke incidence remains uncertain. We have previously reported that the dihydropyridine calcium channel blocker benidipine combined with a β-blocker appeared to be less beneficial in reducing the risk of stroke than a combination of benidipine and thiazide. Here, we further compare the visit-to-visit BP variability among three benidipine-based regimens, namely angiotensin receptor blocker (ARB), β-blocker and thiazide combinations. The present post hoc analysis included 2983 patients without cardiovascular events or death during the first 18 months after randomization. We compared the BP variability (defined as the s.d. and the coefficient of variation (CV)), maximum systolic BP (SBP) and diastolic BP (DBP) of the clinic mean on-treatment BPs obtained at 6-month intervals, starting 6 months after the treatment initiation, among the 3 treatments (ARB, n=1026; β-blocker, n=966; thiazide, n=991). During the first 6-36 months after randomization, both the s.d. and CV-BPs were lower in the benidipine-thiazide group than in the benidipine-β-blocker group (s.d.-SBP, P=0.019; s.d.-DBP, P=0.030; CV-SBP, P=0.012; CV-DBP, P=0.022). The s.d. and CV in the ARB group did not reach statistical significance compared with the other two groups. The maximum BPs did not differ among the three treatments. These findings suggest that the benidipine-thiazide combination may reduce visit-to-visit BP variability more than the benidipine-β-blocker combination.

Indexed as

Adrenergic beta-AntagonistsAgedAngiotensin II Type 1 Receptor BlockersBlood PressureCalcium Channel BlockersDihydropyridinesDiureticsDouble-Blind MethodDrug CombinationsDrug Therapy, CombinationFemaleHeart DiseasesHumansHypertensionMaleMiddle AgedAdrenergic beta-AntagonistsAngiotensin II Type 1 Receptor BlockersbenidipineCalcium Channel BlockersDihydropyridinesDiureticsDrug CombinationsThiazides

Identifiers

PMID26490089
PMCPMC4709460
OpenAlexW2180676015

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.