Trial reportSleep & breathing = Schlaf & Atmung2020
Effect of lung function on the apnea-hypopnea index in patients with overlap syndrome: a multicenter cross-sectional study.
Trial report in Sleep & breathing = Schlaf & Atmung, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.
- Implementation of long-term noninvasive positive airway pressure therapy in patients with COPD: a systematic review and meta-analysis of acceptance and adherence.European respiratory review : an official journal of the European Respiratory Society · 2026Pooled it
- Prevalence of Cardiovascular Diseases in COPD-OSA Overlap Syndrome Versus COPD Alone: A Systematic Review.Pulmonary medicine · 2026Pooled it
- Effect of lung volume on the apnea hypopnea index in patients with overlap syndrome: a single center study.Sleep & breathing = Schlaf & Atmung · 2026Article
- The Role of Lung Volume, Age, and Body Mass Index in Determining Obstructive Sleep Apnea Severity.Medicina (Kaunas, Lithuania) · 2026Article
- The Impact of Lung Function on Sleep Monitoring in Obstructive Sleep Apnea Associated with Obstructive Lung Diseases: Insights from a Clinical Study.Journal of clinical medicine · 2024Article
- Lung Structure and Risk of Sleep Apnea in SPIROMICS.Chronic obstructive pulmonary diseases (Miami, Fla.) · 2024Article
- Interaction of BMI and respiratory status in obstructive sleep apnea, a cross-sectional COPD study.NPJ primary care respiratory medicine · 2023Article
- The Overlap Syndrome of Obstructive Sleep Apnea and Chronic Obstructive Pulmonary Disease: A Systematic Review.Biomedicines · 2022Review
- Sleep disordered breathing and chronic obstructive pulmonary disease: a narrative review on classification, pathophysiology and clinical outcomes.Journal of thoracic disease · 2020Review
- Pulmonary Function Influences the Performance of Berlin Questionnaire, Modified Berlin Questionnaire, and STOP-Bang Score for Screening Obstructive Sleep Apnea in Subjects with Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2020Article
- Practice recommendations for the role of physiotherapy in the management of sleep disorders: the 2022 Brazilian Sleep Association Guidelines.Sleep science (Sao Paulo, Brazil)Review
- Obstructive Sleep Apnea is Associated with an Increased Prevalence of Polycythemia in Patients with Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary diseaseArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 1 country.
Funding
Abstract
purposePatients with chronic obstructive pulmonary disease (COPD) and obstructive sleep apnea (OSA) are referred to as having overlap syndrome (OVS). However, the relationship of lung function with the apnea-hypopnea index (AHI) in patients with OVS has not been evaluated. This multicenter study aimed to evaluate the relationship.
methodsCOPD patients diagnosed by spirometry were recruited from four Chinese tertiary hospitals. Those patients were requested to attend an overnight polysomnography (PSG). The relationships between parameters of lung function and sleep respiration in patients with OVS were assessed using multiple regression analyses.
resultsA total of 520 OVS patients and 246 patients with COPD only finally met inclusion criteria for study. After adjustment for age, sex, body mass index, neck circumference, economic status, smoking status, alcohol consumption, and hypertension, the forced expiratory volume in the first second (FEV
conclusionLung function was associated with the AHI in patients with OVS. The lower FEV
Indexed as
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What OpenQuestion holds
Registered trials
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.