Evidence map›Paper›PMID 39242824›Full record

ArticleHypertension research : official journal of the Japanese Society of Hypertension2025

Peak nocturnal home blood pressure as an early and strong novel risk factor for stroke: the practitioner-based nationwide J-HOP Nocturnal BP study.

Kazuomi Kario, Yukie Okawara, Hiroshi Kanegae, Naoko Tomitani, Satoshi Hoshide

Abstract read
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In one paragraph

Article in Hypertension research : official journal of the Japanese Society of Hypertension, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
  2. Two-year nighttime blood pressure changes after radiofrequency renal denervation: pooled results from the SPYRAL HTN trials.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Trial
  3. Article
  4. Review
  5. Article
  6. Observational
  7. Practical considerations for assessing nocturnal blood pressure peak: a response to Wang et al.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  8. Article
  9. Brain and hypertension: from sympathetic outflow to brain-focused blood pressure management.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Kazuomi KarioDivision of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan. kkario@jichi.ac.jp.
Yukie OkawaraDivision of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
Hiroshi KanegaeGenki Plaza Medical Center for Health Care, Tokyo, Japan.
Naoko TomitaniDivision of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
Satoshi HoshideDivision of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Clinical implications of high peak nighttime home blood pressure (BP) are currently unknown. This study investigated the association between peak nighttime home systolic BP (SBP) and cardiovascular events in individuals with at least one cardiovascular risk factor. In the Japan Morning Surge-Home Blood Pressure (J-HOP) study, nighttime home BP was automatically measured three times each night for 14 days at baseline using a nighttime home BP monitoring device (HEM-5001, Omron Healthcare). Peak nighttime home SBP was defined as average of the highest three values over the 14-night measurement period. Cardiovascular events (stroke, coronary artery disease, heart failure, aortic dissection) were tracked over a mean follow-up period of 7.1 years. This analysis included 2545 individuals (mean age 63.3 ± 10.3 years, 49% male). After adjusting for covariates (including age, sex, and average office, morning, evening, and nighttime home SBP), stroke risk was significantly higher in individuals with peak nighttime home SBP in the highest quintile (≥149.0 mmHg) compared to the lowest quintile (<119.3 mmHg) (hazard ratio [HR] 4.24, 95% confidence interval [CI] 1.07-16.77; p = 0.039 overall and 8.92, 1.49-53.43; p = 0.017 in the subgroup with ≥6 nighttime home SBP measurements). This increased stroke risk remained significant after controlling for day-by-day average real variability of nighttime BP. The average peak nighttime home SBP cut-off value for predicting an increased risk of incident stroke was 136 mmHg. We propose that exaggerated peak nighttime home SBP, determined from ≥6 measurements, is a novel risk factor for stroke, independent of conventional office and home BP values. The exaggerated peak nighttime home systolic blood pressure (HSBP) determined from six or more measurements as a novel risk factor for stroke, independent of conventional office and home blood pressure (BP) values.

Indexed as

Blood PressureCircadian RhythmHypertensionStrokeAgedBlood Pressure Monitoring, AmbulatoryFemaleHumansJapanMaleMiddle AgedRisk FactorsBlood pressure variabilityHome blood pressureNighttime blood pressurePrognosisStroke

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Registered trials

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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.