Abstract
Introduction: COPD exacerbation negatively impacts the patient’s quality of life and lung function, increases mortality, and increases socioeconomic costs. In a real-world setting, the majority of patients with COPD have mild-to-moderate airflow limitation. Therefore, it is important to evaluate COPD exacerbation in patients with mild-to-moderate airflow limitation, although most studies have focused on the patients with moderate or severe COPD. The objective of this study was to evaluate factors associated with COPD exacerbation in patients with mild-to-moderate airflow limitation. Methods: Patients registered in the Korean COPD Subtype Study cohort were recruited from 37 tertiary referral hospitals in Korea. We obtained their clinical data including demographic characteristics, past medical history, and comorbidities from medical records. Patients were required to visit the hospital to document their COPD status using self-administered questionnaires every 6 months. Results: A total of 570 patients with mild-to-moderate airflow limitation were enrolled. During the first year of follow-up, 30.5% patients experienced acute exacerbation, with exacerbations being more common in patients with poor lung function. Assessed factors associated with COPD exacerbation included COPD assessment test scores, modified Medical Research Council dyspnea assessment test scores, St George’s Respiratory Questionnaire for COPD scores, a previous history of exacerbation, and histories of pneumonia and allergic rhinitis. Logistic regression tests revealed St George’s Respiratory Questionnaire for COPD scores (odds ratio [OR], 1.02; 95% confidence interval [CI], 1.00-1.04; P=0.034), a previous history of exacerbation (OR, 3.12; 95% CI, 1.35-7.23; P=0.008), and a history of pneumonia (OR, 1.85; 95% CI, 1.06-3.25; P=0.032) as risk factors for COPD exacerbation. Conclusion: Our results suggest that COPD exacerbation in patients with mild-to-moderate airflow limitation is associated with the patient’s quality of life, previous history of exacerbation, and history of pneumonia.
| Original language | English |
|---|---|
| Pages (from-to) | 1327-1333 |
| Number of pages | 7 |
| Journal | International Journal of COPD |
| Volume | 11 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2016 Jun 16 |
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Keywords
- COPD
- Exacerbation
- Risk factors
ASJC Scopus subject areas
- Pulmonary and Respiratory Medicine
- Health Policy
- Public Health, Environmental and Occupational Health
Cite this
Factors associated with exacerbation in mild-to-moderate COPD patients. / Kim, Joo Kyung; Lee, Soo Haeng; Lee, Bho Hyeon; Lee, Chang Youl; Kim, Do Jin; Min, Kyung-Hoon; Kim, Sung Kyoun; Yoo, Kwang Ha; Jung, Ki Suck; Hwang, Yong Il.
In: International Journal of COPD, Vol. 11, No. 1, 16.06.2016, p. 1327-1333.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Factors associated with exacerbation in mild-to-moderate COPD patients
AU - Kim, Joo Kyung
AU - Lee, Soo Haeng
AU - Lee, Bho Hyeon
AU - Lee, Chang Youl
AU - Kim, Do Jin
AU - Min, Kyung-Hoon
AU - Kim, Sung Kyoun
AU - Yoo, Kwang Ha
AU - Jung, Ki Suck
AU - Hwang, Yong Il
PY - 2016/6/16
Y1 - 2016/6/16
N2 - Introduction: COPD exacerbation negatively impacts the patient’s quality of life and lung function, increases mortality, and increases socioeconomic costs. In a real-world setting, the majority of patients with COPD have mild-to-moderate airflow limitation. Therefore, it is important to evaluate COPD exacerbation in patients with mild-to-moderate airflow limitation, although most studies have focused on the patients with moderate or severe COPD. The objective of this study was to evaluate factors associated with COPD exacerbation in patients with mild-to-moderate airflow limitation. Methods: Patients registered in the Korean COPD Subtype Study cohort were recruited from 37 tertiary referral hospitals in Korea. We obtained their clinical data including demographic characteristics, past medical history, and comorbidities from medical records. Patients were required to visit the hospital to document their COPD status using self-administered questionnaires every 6 months. Results: A total of 570 patients with mild-to-moderate airflow limitation were enrolled. During the first year of follow-up, 30.5% patients experienced acute exacerbation, with exacerbations being more common in patients with poor lung function. Assessed factors associated with COPD exacerbation included COPD assessment test scores, modified Medical Research Council dyspnea assessment test scores, St George’s Respiratory Questionnaire for COPD scores, a previous history of exacerbation, and histories of pneumonia and allergic rhinitis. Logistic regression tests revealed St George’s Respiratory Questionnaire for COPD scores (odds ratio [OR], 1.02; 95% confidence interval [CI], 1.00-1.04; P=0.034), a previous history of exacerbation (OR, 3.12; 95% CI, 1.35-7.23; P=0.008), and a history of pneumonia (OR, 1.85; 95% CI, 1.06-3.25; P=0.032) as risk factors for COPD exacerbation. Conclusion: Our results suggest that COPD exacerbation in patients with mild-to-moderate airflow limitation is associated with the patient’s quality of life, previous history of exacerbation, and history of pneumonia.
AB - Introduction: COPD exacerbation negatively impacts the patient’s quality of life and lung function, increases mortality, and increases socioeconomic costs. In a real-world setting, the majority of patients with COPD have mild-to-moderate airflow limitation. Therefore, it is important to evaluate COPD exacerbation in patients with mild-to-moderate airflow limitation, although most studies have focused on the patients with moderate or severe COPD. The objective of this study was to evaluate factors associated with COPD exacerbation in patients with mild-to-moderate airflow limitation. Methods: Patients registered in the Korean COPD Subtype Study cohort were recruited from 37 tertiary referral hospitals in Korea. We obtained their clinical data including demographic characteristics, past medical history, and comorbidities from medical records. Patients were required to visit the hospital to document their COPD status using self-administered questionnaires every 6 months. Results: A total of 570 patients with mild-to-moderate airflow limitation were enrolled. During the first year of follow-up, 30.5% patients experienced acute exacerbation, with exacerbations being more common in patients with poor lung function. Assessed factors associated with COPD exacerbation included COPD assessment test scores, modified Medical Research Council dyspnea assessment test scores, St George’s Respiratory Questionnaire for COPD scores, a previous history of exacerbation, and histories of pneumonia and allergic rhinitis. Logistic regression tests revealed St George’s Respiratory Questionnaire for COPD scores (odds ratio [OR], 1.02; 95% confidence interval [CI], 1.00-1.04; P=0.034), a previous history of exacerbation (OR, 3.12; 95% CI, 1.35-7.23; P=0.008), and a history of pneumonia (OR, 1.85; 95% CI, 1.06-3.25; P=0.032) as risk factors for COPD exacerbation. Conclusion: Our results suggest that COPD exacerbation in patients with mild-to-moderate airflow limitation is associated with the patient’s quality of life, previous history of exacerbation, and history of pneumonia.
KW - COPD
KW - Exacerbation
KW - Risk factors
UR - http://www.scopus.com/inward/record.url?scp=84975270880&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84975270880&partnerID=8YFLogxK
U2 - 10.2147/COPD.S105583
DO - 10.2147/COPD.S105583
M3 - Article
C2 - 27366060
AN - SCOPUS:84975270880
VL - 11
SP - 1327
EP - 1333
JO - International Journal of COPD
JF - International Journal of COPD
SN - 1176-9106
IS - 1
ER -