Cited by 50Obstructive Sleep Apnea ResearchChronic Obstructive Pulmonary Disease (COPD) ResearchRespiratory Support and Mechanisms

Poor Outcomes Among Patients With Chronic Obstructive Pulmonary Disease With Higher Risk for Undiagnosed Obstructive Sleep Apnea in the LOTT Cohort

Open access
Donovan, Lucas M., Feemster, Laura C., Udris, Edmunds M., Griffith, Matthew F., Spece, Laura J., Palen, Brian N., He, Ken, Parthasarathy, Sairam +3 more·2019·Journal of Clinical Sleep Medicine

Abstract

Evaluate consequences of intermediate to high risk of undiagnosed obstructive sleep apnea (OSA) among individuals with chronic obstructive pulmonary disease (COPD). Using data from the Long Term Oxygen Treatment Trial (LOTT), we assessed OSA risk at study entry among patients with COPD. We compared outcomes among those at intermediate to high risk (modified STOP-BANG score ≥ 3) relative to low risk (score < 3) for OSA. We compared risk of mortality or first hospitalization with proportional hazard models, and incidence of COPD exacerbations using negative binomial regression. We adjusted analyses for demographics, body mass index, and comorbidities. Last, we compared St. George Respiratory Questionnaire and Quality of Well-Being Scale results between OSA risk groups. Of the 222 participants studied, 164 (74%) were at intermediate to high risk for OSA based on the modified STOP-BANG score. Relative to the 58 low-risk individuals, the adjusted hazard ratio of mortality or first hospitalization was 1.61 (95% confidence interval 1.01–2.58) for those at intermediate to high risk of OSA. Risk for OSA was also associated with increased frequency of COPD exacerbations (adjusted incidence rate ratio: 1.78, 95% confidence interval 1.10–2.89). Respiratory symptoms by St. George Respiratory Questionnaire were 5.5 points greater (P = .05), and Quality of Well-Being Scale scores were .05 points lower (P < .01) among those at intermediate to high risk for OSA, indicating more severe respiratory symptoms and lower quality of life. Among individuals with COPD, greater risk for undiagnosed OSA is associated with poor outcomes. Increased recognition and management of OSA in this group could improve outcomes. Donovan LM, Feemster LC, Udris EM, Griffith MF, Spece LJ, Palen BN, He K, Parthasarathy S, Strohl KP, Kapur VK, Au DH. Poor outcomes among patients with chronic obstructive pulmonary disease with higher risk for undiagnosed obstructive sleep apnea in the LOTT cohort. J Clin Sleep Med 2019;15(1):71–77.

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 · 10.5664/jcsm.7574

Cites

40 of 40 references verified0 citation errors · 0 not checkable

Statistics

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

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Overlap syndrome, the concurrent diagnosis of obstructive sleep apnea and chronic obstructive pulmonary disease, is associated with a more severe clinical course than either disease alone.

    “OS is associated with a more severe clinical course compared to either disease alone.”

    From International Consensus Statement on Obstructive Sleep Apnea (2023) · cites this paper as [779]

    The introductory passage reports worse quality of life, mortality, and exacerbations in patients with COPD–OSA overlap compared with patients with COPD alone. The Results compare COPD patients at higher versus lower risk of undiagnosed OSA, not confirmed overlap syndrome against both diseases separately. Our copy does not support the additional comparison with OSA alone. (LLM, conf=0.87)

    Experimental — accuracy not yet measured

Self-check

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

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

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Donovan, L. M., Feemster, L. C., Udris, E. M., Griffith, M. F., Spece, L. J., Palen, B. N., He, K., Parthasarathy, S., Strohl, K. P., Kapur, V. K., & Au, D. H.
Affiliations
  • University of Washington (US)
  • VA Puget Sound Health Care System (US)
  • University of Arizona (US)
  • Case Western Reserve University (US)
Corresponding author
Donovan, Lucas M.
Venue
Journal of Clinical Sleep Medicine
Published
2019-01-15
Volume
15
Issue
1
Pages
71-77
ISSN
  • 1550-9389 (ISSN-L)
  • 1550-9397
OpenAlex
W2909478855
Cited by
50
References
40
Citations by year
2026: 2 · 2025: 10 · 2024: 8 · 2023: 5 · 2022: 7 · 2021: 5 · 2020: 9 · 2019: 4
FWCI
4.28
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Sleep Medicine (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Heart, Lung, and Blood Institute (K12HL137940, F32HL140685, K23HL111116, F32HL142125, T32HL007287)
Topics
  • Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Respiratory Support and Mechanisms
Keywords
chronic obstructive pulmonary disease, obstructive sleep apnea, undiagnosed sleep apnea, COPD exacerbations, hospitalization and mortality, quality of life, respiratory symptoms
MeSH terms
Aged, Female, Humans, Longitudinal Studies, Male, Oxygen Inhalation Therapy, Prospective Studies, Quality of Life, Surveys and Questionnaires, Risk Factors, Time, Cohort Studies, Comorbidity, Incidence, Polysomnography, Sleep Apnea, Obstructive, Pulmonary Disease, Chronic Obstructive

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