Evidence map›Paper›PMID 33623459›Full record

ArticleNature and science of sleep2021

Multi-Night Validation of a Sleep Tracking Ring in Adolescents Compared with a Research Actigraph and Polysomnography.

Nicholas I Y N Chee, Shohreh Ghorbani, Hosein Aghayan Golkashani, Ruth L F Leong, Ju Lynn Ong, Michael W L Chee

Open access · goldAbstract read
In one paragraph

Article in Nature and science of sleep, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
10.2field-weighted citation impact, top 1% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 105 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Advancing adolescent bedtime by motivational interviewing and text message: a randomized controlled trial.Journal of child psychology and psychiatry, and allied disciplines · 2025
    Trial
  5. Trial
  6. Article
  7. Article
  8. Observational
  9. YASA automated sleep staging performance across seven nights of normal sleep and sleep restriction.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2026
    Article
  10. Review
  11. Article
  12. Article
  13. Observational
  14. Article
  15. Article
  16. A skin-interfaced wireless wearable device and data analytics approach for sleep-stage and disorder detection.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  17. Article
  18. Article
  19. Article
  20. Article
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

6 authors at 1 institution in 1 country.

Nicholas I Y N Chee *Centre for Sleep and Cognition, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0002-9598-4908
Shohreh Ghorbani *Centre for Sleep and Cognition, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0002-4714-4349
Hosein Aghayan GolkashaniCentre for Sleep and Cognition, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0002-9942-7949
Ruth L F LeongCentre for Sleep and Cognition, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0001-5567-2152
Ju Lynn OngCentre for Sleep and Cognition, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0001-5115-4112
Michael W L CheeCentre for Sleep and Cognition, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.ORCID 0000-0002-6087-0548
National University of Singapore · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWearable devices have tremendous potential for large-scale longitudinal measurement of sleep, but their accuracy needs to be validated. We compared the performance of the multisensor Oura ring (Oura Health Oy, Oulu, Finland) to polysomnography (PSG) and a research actigraph in healthy adolescents.

methodsFifty-three adolescents (28 females; aged 15-19 years) underwent overnight PSG monitoring while wearing both an Oura ring and Actiwatch 2 (Philips Respironics, USA). Measurements were made over multiple nights and across three levels of sleep opportunity (5 nights with either 6.5 or 8h, and 3 nights with 9h). Actiwatch data at two sensitivity settings were analyzed. Discrepancies in estimated sleep measures as well as sleep-wake, and sleep stage agreements were evaluated using Bland-Altman plots and epoch-by-epoch (EBE) analyses.

resultsCompared with PSG, Oura consistently underestimated TST by an average of 32.8 to 47.3 minutes (

conclusionThe Oura ring yielded comparable sleep measurement to research grade actigraphy at the latter's default settings. Sleep staging needs improvement. However, the device appears adequate for characterizing the effect of sleep duration manipulation on adolescent sleep macro-architecture.

Indexed as

actigraphyadolescentspolysomnographyvalidationwearable

Identifiers

PMID33623459
PMCPMC7894804
OpenAlexW3129642277

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.