The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
Incidence of Chronic Obstructive Pulmonary Disease in a Cohort of Young Adults According to the Presence of Chronic Cough and Phlegm
Abstract
RATIONALE: The few prospective studies aimed at assessing the incidence of chronic obstructive pulmonary disease (COPD) in relation to the presence of chronic cough/phlegm have produced contrasting results. OBJECTIVES: To assess the incidence of COPD in a cohort of young adults and to test whether chronic cough/phlegm and dyspnea are independent predictors of COPD. METHODS: An international cohort of 5,002 subjects without asthma (ages 20-44 yr) with normal lung function (FEV(1)/FVC ratio >/= 70%) from 12 countries was followed from 1991-2002 in the frame of the European Community Respiratory Health Survey II. Incident cases of COPD were those who had an FEV(1)/FVC ratio less than 70% at the end of the follow-up, but did not report having had a doctor diagnose asthma during the follow-up. MAIN RESULTS: The incidence rate of COPD was 2.8 cases/1,000/yr (95% confidence interval [CI], 2.3-3.3). Chronic cough/phlegm was an independent and statistically significant predictor of COPD (incidence rate ratio [IRR], 1.85; 95% CI, 1.17-2.93) after adjusting for smoking habits and other potential confounders, whereas dyspnea was not associated with the disease (IRR = 0.98; 95% CI, 0.64-1.50). Subjects who reported chronic cough/phlegm both at baseline and at the follow-up had a nearly threefold-increased risk of developing COPD with respect to asymptomatic subjects (IRR = 2.88; 95% CI, 1.44-5.79). CONCLUSIONS: The incidence of COPD is substantial even in young adults. The presence of chronic cough/phlegm identifies a subgroup of subjects with a high risk of developing COPD, independently of smoking habits.
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.
Integrity signals
Registry
Cites
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.
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
Vestbo, J., Hurd, S. S., Agustí, A. G., Jones, P. W., Vogelmeier, C., Anzueto, A., Barnes, P. J., Fabbri, L. M., Martinez, F. J., Nishimura, M., et al. (2013) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/rccm.201204-0596pp · Cited by 15,983
Standardization of Spirometry, 1994 Update. American Thoracic Society.
(1995) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/ajrccm.152.3.7663792 · Cited by 6,594
Interpretative strategies for lung function tests
Pellegrino, R., Viegi, G., Brusasco, V., Crapo, R. O., Burgos, F., Casaburi, R., Coates, A., van der Grinten, C. P. M., Gustafsson, P., Hankinson, J., et al. (2005) · European Respiratory Journal · doi:10.1183/09031936.05.00035205 · Cited by 5,945
Celli, B. R., MacNee, W., Agusti, A., Anzueto, A., Berg, B., Buist, A. S., Calverley, P. M. A., Chavannes, N., Dillard, T., Fahy, B., et al. (2004) · European Respiratory Journal · doi:10.1183/09031936.04.00014304 · Cited by 4,421
Spirometric Reference Values from a Sample of the General U.S. Population
HANKINSON, J. L., ODENCRANTZ, J. R., & FEDAN, K. B. (1999) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/ajrccm.159.1.9712108 · Cited by 4,206
The natural history of chronic airflow obstruction.
Fletcher, C., & Peto, R. (1977) · BMJ · doi:10.1136/bmj.1.6077.1645 · Cited by 2,370
The European Community Respiratory Health Survey
Burney, P., Luczynska, C., Chinn, S., & Jarvis, D. (1994) · European Respiratory Journal · doi:10.1183/09031936.94.07050954 · Cited by 1,996
Self-citationThe design and analysis of cohort studies
Breslow, N. E., & Day, N. E. (1987) · International Agency for Research on Cancer eBooks · Cited by 1,312
Burden and clinical features of chronic obstructive pulmonary disease (COPD)
Pauwels, R. A., & Rabe, K. F. (2004) · The Lancet · doi:10.1016/s0140-6736(04)16855-4 · Cited by 1,004
Vestbo, J., Prescott, E., & Lange, P. (1996) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/ajrccm.153.5.8630597 · Cited by 752
Cited by
Vestbo, J., Hurd, S. S., Agustí, A. G., Jones, P. W., Vogelmeier, C., Anzueto, A., Barnes, P. J., Fabbri, L. M., Martinez, F. J., Nishimura, M., et al. (2013) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/rccm.201204-0596pp · Cited by 15,983
Prevalence, pathogenesis, and causes of chronic cough
Chung, K. F., & Pavord, I. D. (2008) · The Lancet · doi:10.1016/s0140-6736(08)60595-4 · Cited by 665
Chronic Bronchitis and Chronic Obstructive Pulmonary Disease
Kim, V., & Criner, G. J. (2013) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/rccm.201210-1843ci · Cited by 513
At the Root: Defining and Halting Progression of Early Chronic Obstructive Pulmonary Disease
Martinez, F. J., Han, M. K., Allinson, J. P., Barr, R. G., Boucher, R. C., Calverley, P. M. A., Celli, B. R., Christenson, S. A., Crystal, R. G., Fagerås, M., et al. (2018) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/rccm.201710-2028pp · Cited by 282
Chronic Obstructive Pulmonary Disease and Lung Cancer: New Molecular Insights
Adcock, I. M., Caramori, G., & Barnes, P. J. (2011) · Respiration · doi:10.1159/000324601 · Cited by 257
Metadata
- Authors
- de Marco, R., Accordini, S., Cerveri, I., Corsico, A., Antó, J. M., Künzli, N., Janson, C., Sunyer, J., Jarvis, D., Chinn, S., Vermeire, P., Svanes, C., Ackermann-Liebrich, U., Gislason, T., Heinrich, J., Leynaert, B., Neukirch, F., Schouten, J. P., Wjst, M., & Burney, P.
- Venue
- American Journal of Respiratory and Critical Care Medicine
- Publisher
- Oxford University Press (OUP)
- Published
- 2007-01-01
- Volume
- 175
- Issue
- 1
- Pages
- 32-39
- ISSN
- 1073-449X (ISSN-L)
- 1535-4970
- OpenAlex
- W1964164058
- Cited by
- 306
- References
- 32
- FWCI
- 12.61
- 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: Incidence of Chronic Obstructive Pulmonary Disease in a Cohort of Young Adults According to the Presence of Chronic Cough and Phlegm. https://app.cochat.ai/papers/10.1164/rccm.200603-381oc
- The paper
- de Marco, R., Accordini, S., Cerveri, I., Corsico, A., Antó, J. M., Künzli, N., Janson, C., Sunyer, J., Jarvis, D., Chinn, S., Vermeire, P., Svanes, C., Ackermann-Liebrich, U., Gislason, T., Heinrich, J., Leynaert, B., Neukirch, F., Schouten, J. P., Wjst, M., & Burney, P. (2007). Incidence of Chronic Obstructive Pulmonary Disease in a Cohort of Young Adults According to the Presence of Chronic Cough and Phlegm. American Journal of Respiratory and Critical Care Medicine. https://doi.org/10.1164/rccm.200603-381oc
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.