Factors Influencing Functional Status Among Patients with Chronic Obstructive Pulmonary Disease

Wednesday, 24 July 2013: 9:10 AM

Supaporn Duangpaeng, DNS
Faculty of Nursing, Burapha University, Muang Chonburi, Thailand
Julaluk Baramee, PhD
Nursing, Burapha University, Chonburi, Thailand

Learning Objective 1: The learner will be able to describe functional status and its predictors in patients with COPD.

Learning Objective 2: The learner will be able to apply the knowledge to develop the program to maintain and enhance functional status for COPD patients.


Patients’ functional status is ability to perform activity of daily living (ADL) to maintain roles, health and well-being. Individuals suffering from chronic obstructive pulmonary disease (COPD) are frequently limited in their daily function. This limitation does not generally reflect severity of the disease but is commonly attributed to the symptoms of disease, psychological distress, health perceptions and other factors. The purpose of this study was to study factors predicting functional status among patients with COPD.


A correlational predictive study was performed with a sample of 180 COPD patients multi-stage randomly selected from four hospitals in the eastern region of Thailand. The research instruments were seven sets of questionnaires and recorded forms measuring personal and illness data, co-morbidity, physical and psychological symptoms, health status perception, social support, regimen adherence and functional status. Spearman rank and Pearson’s correlation coefficient, exploratory factor analysis and standard multiple regression were used to analyzed data.


The findings revealed that disease severity was related to functional status at a moderate level (Spearman rank correlation coefficient = -.611). Regimen adherence and social support were positively related to functional status at a moderate level (Pearson’s r = .331 and .235 respectively) whereas health status perception was positively related at a high level (Pearson’s r = .732). Disease severity, regimen adherence and health status perception could predict 65.0% of the variance of functional status.


The results of this study can be used as the basic knowledge for maintaining and enhancing COPD patients’ ability to achieve functional independence in their roles and for use as the baseline data for further study.