Evidence map›Paper›PMID 36781979›Full record

Observational studyHypertension research : official journal of the Japanese Society of Hypertension2023

Feasibility and measurement stability of smartwatch-based cuffless blood pressure monitoring: A real-world prospective observational study.

Minju Han, Young-Ro Lee, Taeyoung Park, Sang-Hyun Ihm, Wook Bum Pyun, Thilo Burkard, Myeong-Chan Cho, Miguel Camafort, Eugene Yang, George S Stergiou and 3 more

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in Hypertension research : official journal of the Japanese Society of Hypertension, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Observational
  2. Updates in the 2025 AHA/ACC Hypertension Guideline.Current hypertension reports · 2026
    Review
  3. Article
  4. Article
  5. Review
  6. Digital hypertension - what we need for the high-quality management of hypertension in the new era.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Review
  7. Review
  8. Hypertension research 2024 update and perspectives: blood pressure management.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors.

Minju Han *Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea.
Young-Ro Lee *Department of Electrical and Computer Engineering, College of Engineering, Seoul National University, Seoul, South Korea.
Taeyoung Park *Department of Applied Statistics and Department of Statistics and Data Science, Yonsei University, Seoul, Korea.
Sang-Hyun IhmDivision of Cardiology, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
Wook Bum PyunDivision of Cardiology, Department of Internal Medicine, Ewha Woman's University Seoul Hospital, Seoul, South Korea.
Thilo BurkardMedical Outpatient and Hypertension Clinic, ESH Hypertension Centre of Excellence, University Hospital Basel, Basel, Switzerland.
Myeong-Chan ChoDepartment of Internal Medicine, College of Medicine, Chungbuk National University, Cheongju, Korea.
Miguel CamafortESH Excellence Hypertension Center, Department of Internal Medicine, Geriatrics Section, Hospital Clinic, University of Barcelona, Barcelona, Spain.
Eugene YangDivision of Cardiology, Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA.
George S StergiouHypertension Center STRIDE-7, National and Kapodistrian University of Athens, School of Medicine, Third Department of Medicine, Sotiria Hospital, Athens, Greece.
Hae Young LeeDepartment of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea. hylee612@snu.ac.kr.
Jong-Mo SeoDepartment of Electrical and Computer Engineering, College of Engineering, Seoul National University, Seoul, South Korea.
Korean Society of Hypertension

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cuffless wearable devices are currently being developed for long-term monitoring of blood pressure (BP) in patients with hypertension and in apparently healthy people. This study evaluated the feasibility and measurement stability of smartwatch-based cuffless BP monitoring in real-world conditions. Users of the first smartwatch-based cuffless BP monitor approved in Korea (Samsung Galaxy Watch) were invited to upload their data from using the device for 4 weeks post calibration. A total of 760 participants (mean age 43.7 ± 11.9, 80.3% men) provided 35,797 BP readings (average monitoring 22 ± 4 days [SD]; average readings 47 ± 42 per participant [median 36]). Each participant obtained 1.5 ± 1.3 readings/day and 19.7% of the participants obtained measurements every day. BP showed considerable variability, mainly depending on the day and time of the measurement. There was a trend towards higher BP levels on Mondays than on other days of the week and on workdays than in weekends. BP readings taken between 00:00 and 04:00 tended to be the lowest, whereas those between 12:00 and 16:00 the highest. The average pre-post calibration error for systolic BP (difference in 7-day BP before and after calibration), was 6.8 ± 5.6 mmHg, and was increased with higher systolic BP levels before calibration. Smartwatch-based cuffless BP monitoring is feasible for out-of-office monitoring in the real-world setting. The stability of BP measurement post calibration and the standardization and optimal time interval for recalibration need further investigation.

Indexed as

Blood Pressure DeterminationHypertensionBlood PressureBlood Pressure MonitorsFeasibility StudiesFemaleHumansMaleBlood Pressure.Cuffless Blood Pressure MeasurementSmartwatchWearable Device

Identifiers

What OpenQuestion 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 OpenQuestion graph.