Research Objectives:
Chronic obstructive pulmonary disease (COPD) is a major cause of disability and death worldwide. The prevalence of depression and anxiety in COPD patients is generally higher than those reported in other chronic illnesses, and these mental diseases significantly affect the health expenditures and the course of the diseases on elderly COPD patients. The COPD patients with co-morbid depression, anxiety or other chronic diseases are more impaired and have 50% to 100% higher medical costs than those without depression and anxiety. COPD affects approximately 1.8 million people in Taiwan every year, however, little studies have examined the impacts of mental diseases on elderly COPD patients. This study aims to investigate the depression and anxiety status on COPD patients¡¦ medical care utilizations and health outcomes.
Study Design:
This study analyzed the nationally representative research database from National Health Insurance program between 2002 and 2006 in Taiwan, by exploring outpatient visits, hospitalizations, and medical expenditures of COPD and its associated co-morbidities. The data analyses were carried out by Chi-square test, multiple linear regression and multivariate logistic regression.
Population Studied:
Patient aged over 65 with primary diagnosis of COPD and co-morbidity diseases based on ICD-9-CM in Taiwan. To investigate the complications in COPD patients, four diseases such as diabetes, hypertension, heart failure and ischemic heart disease were included in the analyses.
Principle Findings:
Among the 5,735 COPD patients (59.81%, male), most of them were aged over 80 (28.67%) , and lived in urban areas (62.28%) in northern Taiwan (43.71%). The results indicated that those who were suffered from depression or anxiety increased medical utilization and costs. Multiple linear regression model showed that age, and hospital level significantly affect the expenditures for medicine of COPD patients with depression or anxiety (p¡Õ0.001). Multivariate logistic regression model presented that number of complications significantly affect the probability of hospitalization among the COPD patients with mental diseases (p¡Õ0.001).
Conclusions¡G
COPD symptoms were usually getting worsen over time and depression or anxiety affect the COPD patients significantly, though the mental diseases are usually under-estimated. The study results demonstrated that COPD patients suffered from depression and anxiety increased the risks on longer length of stay, higher medical expenditures and more complications.
WHO predicts that COPD will become the third leading cause of death worldwide by 2030. Since mental diseases may worsen elderly COPD patients¡¦ health outcomes, physicians are advised to pay more attention to these types of patients. With on time and appropriate treatments, thus may help to improve quality of care and reduce medical expenditures for these patients.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0804111-135310 |
| Date | 04 August 2011 |
| Creators | Chang, Ling-Hsuan |
| Contributors | Shyh-Jer Chen, Ying-Chun Li, Chen-Kuang Niu |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804111-135310 |
| Rights | user_define, Copyright information available at source archive |
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