AI‐Driven Smartphone Screening for Acute COPD Exacerbations: Enhancing Health Equity in Developing Regions
Open accessAbstract
Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are critical clinical events that necessitate prompt intervention, yet their detection remains challenging in primary care, especially in resource-limited regions where a lack of awareness leads to delayed diagnoses. To address this issue, we developed an AI-based AECOPD detection system that leverages standard smartphone microphones for auscultation, specifically designed for novice users and analyzing sounds to screen for AECOPD without requiring subjective patient-reported scales. Our system demonstrated robust performance, achieving an area under the curve (AUC) of 0.955 (95% CI: 0.929-0.976). A state-transition health-economic model projected per-capita net savings of 456.9 CNY (95% CI: -88.2 to 1,779.3) with a 90.3% probability of positive returns, supporting cost-effective implementation. This research highlights the potential of AI-driven solutions to enhance COPD management in underserved populations, providing a scalable tool to promote health equity where access to pulmonary specialists is constrained.
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.
Integrity signals
Registry
Cites
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.
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?
Smartphone systems detect lung disease with high accuracy.
“AI screening tools designed for resource‐limited settings include smartphone systems that detect lung disease with high accuracy, offering meaningful potential for health equity in underserved regions [9].”
From Artificial Intelligence and Machine Learning for Identifying Social Determinants of Health in Low‐Income Populations Within United States Health Systems: A Scoping Review (2026) · cites this paper as [9]
The Results report 91.5% pooled accuracy for a smartphone-audio system, and the Discussion describes its potential to improve COPD care where resources are scarce. The system detects acute COPD exacerbations, however, not lung disease generally; that broader wording exceeds what the study establishes. (LLM, conf=0.84)
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
AST: Audio Spectrogram Transformer
Gong, Y., Chung, Y.-A., & Glass, J. (2021) · Interspeech 2021 · doi:10.21437/interspeech.2021-698 · Cited by 1,159 · see citing works
Self-citationClaxton, S., Porter, P., Brisbane, J., Bear, N., Wood, J., Peltonen, V., Della, P., Smith, C., & Abeyratne, U. (2021) · npj Digital Medicine · doi:10.1038/s41746-021-00472-x · Cited by 34 · see citing works
Flagged first, then by citations
Research works printed but not linked: 30
- [1]Momtazmanesh, S. et al. Global burden of chronic respiratory diseases and risk factors, 1990–2019: an update from the global burden of disease study 2019. EClinMed.59, 101936 (2023). PMC7614570 37229504
- [2]Wang, C. et al. Prevalence and risk factors of chronic obstructive pulmonary disease in China (the China Pulmonary Health [CPH] study): a national cross-sectional study. Lancet 391, 1706–1717 (2018). 29650248 · DOI
- [3]Anzueto, A. Impact of exacerbations on copd. Eur. Resp. Rev. 19, 113–118 (2010). PMC9682573 20956179 · DOI
- [4]Mathioudakis, A. G. et al. Acute exacerbations of chronic obstructive pulmonary disease: in search of diagnostic biomarkers and treatable traits. Thorax 75, 520–527 (2020). 32217784 PMC7279206 · DOI
- [5]Wedzicha, J. A. & Seemungal, T. A. Copd exacerbations: defining their cause and prevention. Lancet 370, 786–796 (2007). 17765528 PMC7134993 · DOI · Paper page
- [6]Yawn, B. P., Mintz, M. L. & Doherty, D. E. Gold in practice: chronic obstructive pulmonary disease treatment and management in the primary care setting. Int. J. Chronic Obstructive Pulmonary Dis. 16, 289–299 (2021). PMC7886101 33603355
- [7]Vachon, B. et al. Challenges and strategies for improving COPD primary care services in Quebec: results of the experience of the compas+ quality improvement collaborative. Int. J. Chronic Obstr. Pulmonary Dis. 17, 259–272 (2022). PMC8819163 35140460
- [8]Criner, R. N. & Han, M. K. Copd care in the 21st century: a public health priority. Resp. Care 63, 591–600 (2018). PMC6373864 29692353 · DOI
- [9]Liang, L. et al. Trends in hospitalization expenditures for acute exacerbations of COPD in Beijing from 2009 to 2017. Int. J. Chronic Obstr. Pulmonary Dis. 15, 1165–1175 (2020). PMC7247615 32547004
- [10]Li, F. et al. The evaluation of general practitioners’ awareness/knowledge and adherence to the gold guidelines in a Shanghai suburb. Asia Pac. J. Public Health 27, NP2067–NP2078 (2015). 23420058 · DOI
- [11]Leidy, N. K. et al. Development of the exacerbations of chronic obstructive pulmonary disease tool (exact): a patient-reported outcome (pro) measure. Value Health 13, 965–975 (2010). 20659270 · DOI
- [12]Wilkinson, T. M., Donaldson, G. C., Hurst, J. R., Seemungal, T. A. & Wedzicha, J. A. Early therapy improves outcomes of exacerbations of chronic obstructive pulmonary disease. Am. J. Resp. Crit. Care Med. 169, 1298–1303 (2004). 14990395 · DOI
- [13]Wu, P. et al. Pharmaceutical treatment status of patients with COPD in the community based on medical internet of things: a real-world study. NPJ Prim. Care Resp. Med. 34, 10 (2024). PMC11087570 38729942 · DOI
- [14]Chen, X. et al. Chronic obstructive pulmonary disease as a risk factor for cognitive impairment: a systematic review and meta-analysis. BMJ Open Resp. Res.11, e001709 (2024). PMC11603807 39608869
- [15]Stellefson, M., Wang, M. Q. & Campbell, O. Factors influencing patient-provider communication about subjective cognitive decline in people with COPD: Insights from a national survey. Chronic Resp. Dis. 21, 14799731241268338 (2024). PMC11292718 39083760 · DOI
- [16]Yang, T. et al. Exacerbation in patients with stable COPD in China: analysis of a prospective, 52-week, nationwide, observational cohort study (real). Ther. Adv. Resp. Dis. 17, 17534666231167353 (2023). PMC10126609 37073797 · DOI
- [17]Liu, F., Jiang, Y., Xu, G. & Ding, Z. Effectiveness of telemedicine intervention for chronic obstructive pulmonary disease in China: a systematic review and meta-analysis. Telemed. e-Health 26, 1075–1092 (2020). 32069170 · DOI
- [18]North, M. et al. A randomised controlled feasibility trial of e-health application supported care vs usual care after exacerbation of COPD: the rescue trial. NPJ Dig. Med. 3, 145 (2020). PMC7603326 33145441 · DOI
- [19]Liu, X. et al. Improving access to cardiovascular care for 1.4 billion people in China using telehealth. npj Dig. Med. 7, 376 (2024). PMC11666715 39715810 · DOI
- [20]Enichen, E. J., Heydari, K., Li, B. & Kvedar, J. C. Telemedicine expands cardiovascular care in China–lessons for health equity in the United States. npj Dig. Med. 8, 71 (2025). PMC11782522 39885294 · DOI
- [21]Velardo, C. et al. Digital health system for personalised COPD long-term management. BMC Med. Inform. Decis. Mak. 17, 1–13 (2017). 28219430 PMC5319140 · DOI
- [23]Kang, S.-H. et al. Cardiac auscultation using smartphones: pilot study. JMIR mHealth uHealth 6, e8946 (2018). PMC5853766 29490899 · DOI
- [24]Luo, H. et al. Smartphone as an electronic stethoscope: factors influencing heart sound quality. Eur. Heart J.-Dig. Health 3, 473–480 (2022). PMC9708017 36712168 · DOI
- [25]Williams, L. et al. Auscultation Skills: Breath & Heart Sounds. (Lippincott Williams & Wilkins, Philadelphia, PA, 2009).
- [26]Celli, B. R. et al. An updated definition and severity classification of chronic obstructive pulmonary disease exacerbations: the Rome proposal. Am. J. Resp. Crit. Care Med. 204, 1251–1258 (2021). 34570991 · DOI
- [27]O’donnell, D. & Parker, C. Copd exacerbations⋅ 3: pathophysiology. Thorax 61, 354–361 (2006). 16565268 PMC2104611 · DOI
- [28]Melbye, H., Solis, J. C. A., Jácome, C. & Pasterkamp, H. Inspiratory crackles-early and late-revisited: identifying COPD by crackle characteristics. BMJ Open Resp. Res. 8, e000852 (2021). 33674283 PMC7938968 · DOI
- [29]Zhang, Y. et al. Towards open respiratory acoustic foundation models: Pretraining and benchmarking. Adv. Neural Inf. Process. Syst. 37, 27024–27055 (2024).
- [31]Venkatesan, P. Gold COPD report: 2024 update. Lancet Resp. Med. 12, 15–16 (2024). 38061380 · DOI
- [32]Vaswani, A. et al. Attention is all you need. Adv. Neural Inf. Proces. Syst.30 (2017).
Cited by
Sorted by citations
Razzano, A. V. (2026) · Health Science Reports · doi:10.1002/hsr2.73083
- Authors
- Gong, Y., Xu, C., Mo, C., Wu, J., Lin, H., Su, H., Zhang, Q., Zhang, Q., & Yang, S.
- Affiliations
- Hong Kong University of Science and Technology (HK)
- Guangdong Academy of Medical Sciences (CN)
- Corresponding author
- Zhang, Qingpeng
- Zhang, Qian
- Yang, Shifang
- Venue
- npj Digital Medicine
- Published
- 2025-11-21
- Volume
- 8
- Issue
- 1
- Pages
- 715-715
- ISSN
- 2398-6352 (ISSN-L)
- PMC
- PMC12638963
- OpenAlex
- W4416470773
- Cited by
- 6
- References
- 2
- Citations by year
- 2026: 6
- FWCI
- 3.94
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- npj Digital Medicine (publishedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
- Funders
- Hong Kong RGC (HB016, 16206122)
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Phonocardiography and Auscultation Techniques
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
- Health Sciences › Health Professions › Health Information Management › Artificial Intelligence in Healthcare
- Keywords
- COPD exacerbations, chronic obstructive pulmonary disease, lung sound analysis, primary care screening, resource-limited settings, health equity, cost-effectiveness, state transition model, delayed diagnosis
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