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Validation of the Swedish Multidimensional Dyspnea Profile (MDP) in outpatients with cardiorespiratory disease

Ekström, Magnus LU ; Bornefalk, Hans; Sköld, Magnus; Janson, Christer; Blomberg, Anders; Sandberg, Jacob LU ; Bornefalk-Hermansson, Anna; Igelström, Helena and Sundh, Josefin (2019) In BMJ Open Respiratory Research 6(1).
Abstract

Introduction Breathlessness is a cardinal symptom in cardiorespiratory disease. An instrument for measuring different aspects of breathlessness was recently developed, the Multidimensional Dyspnea Profile (MDP). This study aimed to validate the MDP in terms of the underlying factor structure, internal consistency, test-retest reliability and concurrent validity in Swedish outpatients with cardiorespiratory disease. Methods Outpatients with stable cardiorespiratory disease and breathlessness in daily life were recruited. Factor structure of MDP was analysed using confirmatory factor analysis; internal consistency was analysed using Cronbach's alpha; and test-retest reliability was analysed using intraclass correlation coefficients (ICCs)... (More)

Introduction Breathlessness is a cardinal symptom in cardiorespiratory disease. An instrument for measuring different aspects of breathlessness was recently developed, the Multidimensional Dyspnea Profile (MDP). This study aimed to validate the MDP in terms of the underlying factor structure, internal consistency, test-retest reliability and concurrent validity in Swedish outpatients with cardiorespiratory disease. Methods Outpatients with stable cardiorespiratory disease and breathlessness in daily life were recruited. Factor structure of MDP was analysed using confirmatory factor analysis; internal consistency was analysed using Cronbach's alpha; and test-retest reliability was analysed using intraclass correlation coefficients (ICCs) for patients with unchanged breathlessness between assessments (baseline, after 30-90 min and 2 weeks). Concurrent validity was evaluated using correlations with validated scales of breathlessness, anxiety, depression and health-related quality of life. Results In total, 182 outpatients with cardiorespiratory disease and breathlessness in daily life were included; 53.3% were women; main diagnoses were chronic obstructive pulmonary disease (24.7%), asthma (21.4%), heart failure (19.2%) and idiopathic pulmonary fibrosis (18.7%). The MDP total, immediate perception and emotional response scores, and individual item scores showed expected factor structure and acceptable measurement properties: internal consistency (Cronbach's alpha, range 0.80-0.93); test-retest reliability at 30-90 min and 2 weeks (ICC, range 0.67-0.91); and concurrent validity. There was no evidence of a learning effect. Findings were similar between diagnoses. Discussion MDP is a valid instrument for multidimensional measurement of breathlessness in Swedish outpatients across cardiorespiratory diseases.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
breathlessness, dyspnoea, heart disease, measurement, multidimensional, respiratory disease, Swedish
in
BMJ Open Respiratory Research
volume
6
issue
1
publisher
BMJ Publishing Group
external identifiers
  • scopus:85072583610
ISSN
2052-4439
DOI
10.1136/bmjresp-2018-000381
language
English
LU publication?
yes
id
3e5381d5-dfdf-4032-9052-ad9a3534a9f6
date added to LUP
2019-10-07 12:05:45
date last changed
2019-10-23 06:23:51
@article{3e5381d5-dfdf-4032-9052-ad9a3534a9f6,
  abstract     = {<p>Introduction Breathlessness is a cardinal symptom in cardiorespiratory disease. An instrument for measuring different aspects of breathlessness was recently developed, the Multidimensional Dyspnea Profile (MDP). This study aimed to validate the MDP in terms of the underlying factor structure, internal consistency, test-retest reliability and concurrent validity in Swedish outpatients with cardiorespiratory disease. Methods Outpatients with stable cardiorespiratory disease and breathlessness in daily life were recruited. Factor structure of MDP was analysed using confirmatory factor analysis; internal consistency was analysed using Cronbach's alpha; and test-retest reliability was analysed using intraclass correlation coefficients (ICCs) for patients with unchanged breathlessness between assessments (baseline, after 30-90 min and 2 weeks). Concurrent validity was evaluated using correlations with validated scales of breathlessness, anxiety, depression and health-related quality of life. Results In total, 182 outpatients with cardiorespiratory disease and breathlessness in daily life were included; 53.3% were women; main diagnoses were chronic obstructive pulmonary disease (24.7%), asthma (21.4%), heart failure (19.2%) and idiopathic pulmonary fibrosis (18.7%). The MDP total, immediate perception and emotional response scores, and individual item scores showed expected factor structure and acceptable measurement properties: internal consistency (Cronbach's alpha, range 0.80-0.93); test-retest reliability at 30-90 min and 2 weeks (ICC, range 0.67-0.91); and concurrent validity. There was no evidence of a learning effect. Findings were similar between diagnoses. Discussion MDP is a valid instrument for multidimensional measurement of breathlessness in Swedish outpatients across cardiorespiratory diseases.</p>},
  articleno    = {e000381},
  author       = {Ekström, Magnus and Bornefalk, Hans and Sköld, Magnus and Janson, Christer and Blomberg, Anders and Sandberg, Jacob and Bornefalk-Hermansson, Anna and Igelström, Helena and Sundh, Josefin},
  issn         = {2052-4439},
  keyword      = {breathlessness,dyspnoea,heart disease,measurement,multidimensional,respiratory disease,Swedish},
  language     = {eng},
  number       = {1},
  publisher    = {BMJ Publishing Group},
  series       = {BMJ Open Respiratory Research},
  title        = {Validation of the Swedish Multidimensional Dyspnea Profile (MDP) in outpatients with cardiorespiratory disease},
  url          = {http://dx.doi.org/10.1136/bmjresp-2018-000381},
  volume       = {6},
  year         = {2019},
}