Prevalence and risks of chronic airway obstruction: a population cohort study in taiwan |
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| Authors: | Wang Yu-Chun Lin Jia-Ming Li Chung-Yi Lee Long-Teng Guo Yue-Liang Sung Fung-Chang |
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| Affiliation: | Institute of Environmental Health, China Medical University College of Public Health, 91 Hsueh-Shih Rd, Taichung 404, Taiwan. |
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| Abstract: | BACKGROUND: This study investigated the prevalence, incidence, and hospitalization for chronic airway obstruction (CAO) in a population cohort. METHODS: Medical reimbursement claims from 1996 to 2002 based on a 1996 insured cohort of 167,372 persons from National Health Insurance, Taiwan, were used. We presented the chronological trends of CAO (International Classification of Diseases, Ninth Revision code 496) and the relationships between the CAO severity and age, sex, urbanization, and hospitalization and comorbidity for the population >/= 40 years old. RESULTS: The overall average annual prevalence and incidence rates were 2.48/100 and 0.66/100, respectively, for the population, among 4,568 patients with CAO cared during the study period. For the population aged >/= 70 years, the prevalence rates had a peak of 8.83/100 in 1998 and afterward remained a plateau until 2002. The corresponding incidence decreased from 2.48/100 to 1.62/100, and the hospitalization rate for them had a peak of 2.22/100 in 1999. The multivariate logistic regression analysis showed that the risk of hospitalization for CAO was higher for patients with the comorbidity of renal failure, coronary artery disease, and pneumonia and influenza, but lower with skin and joint disorders. CONCLUSIONS: The national insurance program promotes patient care and provides a proper pathway for surveillance and identification of CAO. |
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| Keywords: | chronic airway obstructions comorbidity population cohort universal health insurance BPH" },{" #name" :" keyword" ," $" :{" id" :" cekeyw50a" }," $$" :[{" #name" :" text" ," _" :" benign prostate hypertrophy CAD" },{" #name" :" keyword" ," $" :{" id" :" cekeyw60a" }," $$" :[{" #name" :" text" ," _" :" coronary artery disease CAO" },{" #name" :" keyword" ," $" :{" id" :" cekeyw70a" }," $$" :[{" #name" :" text" ," _" :" chronic airway obstruction CI" },{" #name" :" keyword" ," $" :{" id" :" cekeyw80a" }," $$" :[{" #name" :" text" ," _" :" confidence interval CPD" },{" #name" :" keyword" ," $" :{" id" :" cekeyw90a" }," $$" :[{" #name" :" text" ," _" :" chronic pulmonary disease ICD-9" },{" #name" :" keyword" ," $" :{" id" :" cekeyw100a" }," $$" :[{" #name" :" text" ," _" :" International Classification of Diseases, Ninth Revision NHI" },{" #name" :" keyword" ," $" :{" id" :" cekeyw110a" }," $$" :[{" #name" :" text" ," _" :" National Health Insurance OR" },{" #name" :" keyword" ," $" :{" id" :" cekeyw120a" }," $$" :[{" #name" :" text" ," _" :" odds ratio PI" },{" #name" :" keyword" ," $" :{" id" :" cekeyw130a" }," $$" :[{" #name" :" text" ," _" :" pneumonia and influenza |
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