Self management is independently associated with disease specific quality of life in COPD.
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Positive/negative Affect Ratio mediates the association of self-management-quality of life.
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Significant self management domains in COPD: investment in behaviors and self-efficacy.
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Age and lung function are not significantly associated to self-management abilities in COPD.
Abstract
Objective
This study aimed to increase our understanding of general self-management (SM) abilities in COPD by determining if SM can predict disease specific quality of life (QoL), by investigating whether specific SM domains are significant in COPD and by exploring the mediating effect of the positive/negative affect in the association between SM and QoL.
Methods
Cross-sectional study based on 292 patients with COPD. Measures included demographics, lung function, gait speed, health care utilization, positive/negative affect, SM abilities, breathlessness and disease specific QoL. We performed, correlation, multiple regression models and mediation analysis (positive/negative affect being mediator between SM and QoL association).
Results
After controlling for breathlessness, living alone, marital status, hospitalization history, age and lung function, SM related to QoL (p < 0.0001). Investment in behaviors (hobbies and social relationships) and self-efficacy are SM domains independently related to QoL in COPD. Positivity measured by the positive/negative affect ratio completely mediates the relationship of SM with QoL.
Conclusion
SM is independently associated with disease specific QoL in COPD after adjustment significant covariates but positive/negative affect ratio completely mediates the relationship of SM with QoL.
Practice implications
Measuring positive/negative affect and addressing investment behavior and self-efficacy are important in implementing COPD-SM programs.