Evidence map›Paper›PMID 34326479›Full record

ArticleHypertension research : official journal of the Japanese Society of Hypertension2021

Impact of indoor temperature instability on diurnal and day-by-day variability of home blood pressure in winter: a nationwide Smart Wellness Housing survey in Japan.

Wataru Umishio, Toshiharu Ikaga, Kazuomi Kario, Yoshihisa Fujino, Masaru Suzuki, Shintaro Ando, Tanji Hoshi, Takesumi Yoshimura, Hiroshi Yoshino, Shuzo Murakami and 1 more

Abstract read
In one paragraph

Article in Hypertension research : official journal of the Japanese Society of Hypertension, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–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

19 citing papers in PubMed.

  1. Catheter-based ultrasound renal denervation in patients with resistant hypertension: the randomized, controlled REQUIRE trial.Hypertension research : official journal of the Japanese Society of Hypertension · 2022
    Trial
  2. Article
  3. The Japanese Society of Hypertension Practical Consensus Guidelines for Seasonal Blood Pressure Management.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  4. Seasonal variation in day-to-day blood pressure variability: large-scale within-individual home blood pressure data.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  5. Article
  6. Review
  7. Review
  8. "Morning BP Action in Winter" initiative: confronting cardiovascular "heat shock".Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  9. Article
  10. Article
  11. Importance of measuring indoor temperature to understand blood pressure levels and variability at home.Hypertension research : official journal of the Japanese Society of Hypertension · 2024
    Article
  12. Digital hypertension towards to the anticipation medicine.Hypertension research : official journal of the Japanese Society of Hypertension · 2023
    Review
  13. Topics 2023 in Hypertension Research leading to guidelines in Asia.Hypertension research : official journal of the Japanese Society of Hypertension · 2023
    Article
  14. Current situation of telemedicine research for cardiovascular risk in Japan.Hypertension research : official journal of the Japanese Society of Hypertension · 2023
    Review
  15. Article
  16. Latest hypertension research to inform clinical practice in Asia.Hypertension research : official journal of the Japanese Society of Hypertension · 2022
    Article
  17. Review
  18. The shifted focus of interest in the temperature-blood pressure relationship: from load to variability.Hypertension research : official journal of the Japanese Society of Hypertension · 2021
    Article
  19. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors.

Wataru UmishioDepartment of Architecture and Building Engineering, School of Environment and Society, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, Japan. umishio.w.aa@m.titech.ac.jp.
Toshiharu IkagaDepartment of System Design Engineering, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa, Japan.
Kazuomi KarioDepartment of Cardiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan.
Yoshihisa FujinoDepartment of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Masaru SuzukiDepartment of Emergency Medicine, Ichikawa General Hospital, Tokyo Dental College, Ichikawa, Chiba, Japan.
Shintaro AndoDepartment of Architecture, Faculty of Environmental Engineering, University of Kitakyushu, Kitakyushu, Fukuoka, Japan.
Tanji HoshiTokyo Metropolitan University, Hachioji, Tokyo, Japan.
Takesumi YoshimuraUniversity of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Hiroshi YoshinoTohoku University, Sendai, Miyagi, Japan.
Shuzo MurakamiInstitute for Building Environment and Energy Conservation, Kojimachi, Chiyoda-ku, Tokyo, Japan.
SWH survey group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Home blood pressure (HBP) variability is an important factor for cardiovascular events. While several studies have examined the effects of individual attributes and lifestyle factors on reducing HBP variability, the effects of living environment remain unknown. We hypothesized that a stable home thermal environment contributes to reducing HBP variability. We conducted an epidemiological survey on HBP and indoor temperature in 3785 participants (2162 households) planning to have their houses retrofitted with insulation. HBP was measured twice in the morning and evening for 2 weeks in winter. Indoor temperature was recorded with each HBP observation. We calculated the morning-evening (ME) difference as an index of diurnal variability and the standard deviation (SD), coefficient of variation (CV), average real variability (ARV) and variability independent of the mean (VIM) as indices of day-by-day variability. The association between BP variability and temperature instability was analyzed using multiple linear regression models. The mean ME difference in indoor/outdoor temperature (a decrease in temperature overnight) was 3.2/1.5 °C, and the mean SD of indoor/outdoor temperature was 1.6/2.5 °C. Linear regression analyses showed that the ME difference in indoor temperature was closely correlated with the ME difference in systolic BP (0.85 mmHg/°C, p < 0.001). The SD of indoor temperature was also associated with the SD of systolic BP (0.61 mmHg/°C, p < 0.001). The CV, ARV, and VIM showed similar trends as the SD of BP. In contrast, outdoor temperature instability was not associated with either diurnal or day-by-day HBP variability. Therefore, residents should keep the indoor temperature stable to reduce BP variability.

Indexed as

HousingHypertensionBlood PressureBlood Pressure Monitoring, AmbulatoryHumansJapanTemperatureDay-by-day variabilityDiurnal variabilityHome blood pressureHousingIndoor temperature

Identifiers

PMID34326479
PMCPMC8568693

What OpenQuestion holds

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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.