Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 651

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Sleep Apnea, Hypopnea and Oxygen Desaturation in Normal Subjects: A Strong Male Predominance

Block, A. Jay, Boysen, Philip G., Wynne, James W., Hunt, Lynn A.·1979·New England Journal of Medicine

Abstract

Thirty asymptomatic men and 19 asymptomatic women were monitored during one night's sleep to determine the incidence of breathing abnormalities and oxygen desaturation in normal subjects. Twenty men accounted for 264 episodes of nocturnal oxygen desaturation or abnormal breathing. Women never experienced oxygen desaturation, and only three had a total of nine episodes of apnea. These sex differences were highly significant (P less than 0.003). In men, increasing age and obesity correlated positively with the incidence of nocturnal oxygen desaturation and abnormal breathing. Four asymptomatic men weighing more than 90 kg dropped their saturation to very low levels (68 to 72 per cent). Abnormal breathing and oxygen desaturation during sleep in subjects with chronic obstructive lung disease of the syndrome of hypersomnolence with periodic breathing may represent the superimposition of smoking or obesity on a normal tendency to snoring and oxygen desaturation in men.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1056/nejm197903083001001

Cites

2 of 2 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 2 references

Cited by

See all 651

Metadata

Authors
Block, A. J., Boysen, P. G., Wynne, J. W., & Hunt, L. A.
Venue
New England Journal of Medicine
Published
1979-03-08
Volume
300
Issue
10
Pages
513-517
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2330439990
Cited by
651
References
2
FWCI
26.51
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Sleep Apnea, Hypopnea and Oxygen Desaturation in Normal Subjects: A Strong Male Predominance. https://app.cochat.ai/papers/10.1056/nejm197903083001001
The paper
Block, A. J., Boysen, P. G., Wynne, J. W., & Hunt, L. A. (1979). Sleep Apnea, Hypopnea and Oxygen Desaturation in Normal Subjects: A Strong Male Predominance. New England Journal of Medicine. https://doi.org/10.1056/nejm197903083001001

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.