| Title |
Incidence and long-term outcome of severe asthma–COPD overlap compared to asthma and COPD alone: a 35-year prospective study of 57,053 middle-aged adults
|
|---|---|
| Published in |
International Journal of Chronic Obstructive Pulmonary Disease, February 2017
|
| DOI | 10.2147/copd.s123167 |
| Pubmed ID | |
| Authors |
Camilla Boslev Baarnes, Zorana Jovanovic Andersen, Anne Tjønneland, Charlotte Suppli Ulrik |
| Abstract |
Incidence and prognosis for severe asthma-COPD overlap is poorly characterized. We investigated incidence and long-term outcome for patients with asthma-COPD overlap compared to asthma and COPD alone. A total of 57,053 adults (aged 50-64 years) enrolled in the Danish Diet, Cancer, and Health cohort (1993-1997) were followed in the National Patients Registry for admissions for asthma (DJ45-46) and COPD (DJ40-44) and vital status. Asthma-COPD overlap was defined as at least one hospital admission for asthma and one for COPD (different time points), and incident asthma-COPD overlap as at least one of the diagnoses occurring after enrollment into the Diet, Cancer, and Health cohort. A total of 1,845 (3.2%) and 4,037 (7.1%) participants had admissions for asthma and COPD, respectively, with 662 (1.2%) participants with asthma-COPD overlap. Incidence rate of asthma-COPD overlap per 1,000 person-years was higher in women (0.73) than in men (0.54) (P<0.02). Mortality rate was higher in asthma-COPD overlap (25.9 per 1,000 person-years) compared with COPD (23.1, P<0.05) and asthma (7.9, P<0.001) alone. Compared to COPD alone, mortality was higher in women with asthma-COPD overlap (19.6 and 25.5, respectively; P<0.01), and the excess mortality rate for asthma-COPD overlap patients was most prominent for younger age groups (12.9 compared to 7.2 and 4.6 for COPD and asthma alone, respectively; P<0.01). This large population-based study revealed a higher incidence of severe asthma-COPD overlap in women compared to men, and furthermore that all-cause mortality is higher in women and younger subjects with asthma-COPD overlap compared with those with asthma or COPD alone. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 2 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 45 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 45 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 8 | 18% |
| Student > Master | 6 | 13% |
| Professor | 5 | 11% |
| Student > Bachelor | 5 | 11% |
| Student > Ph. D. Student | 3 | 7% |
| Other | 9 | 20% |
| Unknown | 9 | 20% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 20 | 44% |
| Biochemistry, Genetics and Molecular Biology | 2 | 4% |
| Nursing and Health Professions | 2 | 4% |
| Psychology | 2 | 4% |
| Mathematics | 1 | 2% |
| Other | 4 | 9% |
| Unknown | 14 | 31% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 August 2017.
All research outputs
#19,951,180
of 25,382,440 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#1,938
of 2,578 outputs
Outputs of similar age
#307,054
of 424,972 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#58
of 80 outputs
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