Identifying COPD patients at risk for worse symptoms, HRQoL, and self-efficacy: A cluster analysis

Objectives To identify clusters of chronic obstructive pulmonary disease (COPD) patients with distinct beliefs about their illness in terms of symptoms, health-related quality of life (HRQoL), self-efficacy, and daily life physical activity (DLPA). Methods This cross-sectional study included 150 COP...

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Bibliographic Details
Published in:Chronic illness 2019-06, Vol.15 (2), p.138-148
Main Authors: Lopes, Aline C, Xavier, Rafaella F, AC Pereira, Ana Carolina, Stelmach, Rafael, Fernandes, Frederico LA, Harrison, Samantha L, Carvalho, Celso RF
Format: Article
Language:English
Subjects:
Academic achievement
Activities of daily living
Chronic obstructive pulmonary disease
Cluster analysis
Clustering
Coherence
Coping
Dyspnea
Health status
Illnesses
Outpatients
Perceptions
Physical activity
Quality of life
Questionnaires
Self-efficacy
Symptoms
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Summary:Objectives To identify clusters of chronic obstructive pulmonary disease (COPD) patients with distinct beliefs about their illness in terms of symptoms, health-related quality of life (HRQoL), self-efficacy, and daily life physical activity (DLPA). Methods This cross-sectional study included 150 COPD outpatients. The patients’ illness perceptions, clinical control, HRQoL, self-efficacy, and DLPA (accelerometry) were evaluated. A cluster analysis was conducted using data from the Illness Perceptions Questionnaire - Revised to establish groups of patients with distinct illness perceptions. Differences between clusters were tested using a T-test or a Mann–Whitney U test. Results The cluster analysis revealed two groups: distressed (n = 95) and coping (n = 55). Despite the fact that both clusters presented similar pulmonary function, between-cluster differences were observed in their self-efficacy, dyspnea, HRQoL, clinical control (p 
ISSN:1742-3953
1745-9206
DOI:10.1177/1742395317753883