Evidence map›Paper›PMID 34823649›Full record

ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2022

Treatment outcomes among rural and urban patients with obstructive sleep apnea: a prospective cohort study.

Jennifer Corrigan, Willis H Tsai, Ada Ip-Buting, Christopher Ng, Imhokhai Ogah, Peter Peller, Heather Sharpe, Cheryl Laratta, Sachin R Pendharkar

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 23% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Quality of life among obstructive sleep apnoea patients: a systematic review and meta-analysis of EQ-5D studies.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025
    Pooled it
  2. Trial
  3. Trial
  4. Artificial intelligence in surgical planning and outcome prediction for obstructive sleep apnea: emerging hype or the future standard?Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Review
  5. Article
  6. Article
  7. Access and models of obstructive sleep apnea care: a cross-national comparison of Canadian and Australian patient survey data.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Article
  8. Article
  9. Rural residence and adherence to continuous positive airway pressure therapy: have we overcome a barrier?Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Article
  10. Canadian family physician Medecin de famille canadien
    Article
  11. Article
  12. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

Jennifer CorriganDepartment of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Willis H TsaiDepartment of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Ada Ip-ButingWard of the 21st Century Research and Innovation Centre, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Christopher NgUniversity of British Columbia, Vancouver, Canada.
Imhokhai OgahDepartment of Medicine, Queen's University, Kingston, Canada.
Peter PellerSpatial and Numeric Data Services, University of Calgary, Calgary, Canada.
Heather SharpeDepartment of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Cheryl LarattaDepartment of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada.
Sachin R PendharkarDepartment of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada.
University of Calgary · CAUniversity of Alberta · CAQueen's University · CAUniversity of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesTo determine whether adherence to continuous positive airway pressure (CPAP) in adults with uncomplicated obstructive sleep apnea differs by rural vs urban residential address.

methodsIn this prospective cohort study, we recruited adults who initiated CPAP for uncomplicated obstructive sleep apnea that was diagnosed by a physician using sleep specialist-interpreted diagnostic testing. Participants were classified as urban (community size > 100,000) or rural (community size < 100,000) by translating residential postal code into geographic census area. The primary outcome was mean daily hours of CPAP use compared between rural and urban patients. Secondary outcomes included the proportion of patients who were adherent to CPAP, change in Epworth Sleepiness Scale score, change in EuroQOL-5D visual analog score, and Visit-Specific Satisfaction Instrument score. All outcomes were measured 3 months after CPAP initiation.

resultsWe enrolled 242 patients (100 rural) with a mean (standard deviation) age of 51 (13) years and a respiratory event index of 24 (18) events/h. The mean (95% confidence interval) CPAP use was 3.19 (2.8-3.58) hours/night and 35% were CPAP-adherent, with no difference between urban and rural patients. Among the 65% of patients who were using CPAP at 3 months, the mean CPAP use was 4.89 (4.51-5.28) hours/night and was not different between rural and urban patients. Improvement in the Epworth Sleepiness Scale score and patient satisfaction was similar between groups, but the EuroQOL-5D score improved to a greater extent in rural patients. Urban or rural residence was not associated with CPAP adherence according to multivariable regression analysis.

conclusionsRural vs urban residence was not associated with differences in CPAP adherence among patients with uncomplicated OSA diagnosed by a physician using specialist-interpreted sleep diagnostic testing. CITATION: Corrigan J, Tsai WH, Ip-Buting A, et al. Treatment outcomes among rural and urban patients with obstructive sleep apnea: a prospective cohort study.

Indexed as

Sleep Apnea, ObstructiveAdultContinuous Positive Airway PressureHumansMiddle AgedPatient CompliancePatient SatisfactionProspective StudiesTreatment Outcomecontinuous positive airway pressuregeographic factorsobstructive sleep apnearural healthtreatment outcome

Identifiers

PMID34823649
PMCPMC8974366
OpenAlexW3217068793

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.