PMID- 24993906
OWN - NLM
STAT- MEDLINE
DCOM- 20150622
LR  - 20220409
IS  - 1399-3003 (Electronic)
IS  - 0903-1936 (Linking)
VI  - 44
IP  - 4
DP  - 2014 Oct
TI  - The COPD assessment test: a systematic review.
PG  - 873-84
LID - 10.1183/09031936.00025214 [doi]
AB  - The COPD assessment test (CAT) is a self-administered questionnaire that measures 
      health-related quality of life. We aimed to systematically evaluate the 
      literature for reliability, validity, responsiveness and minimum clinically 
      important difference (MCID) of the CAT. Multiple databases were searched for 
      studies analysing the psychometric properties of the CAT in adults with chronic 
      obstructive pulmonary disease. Two reviewers independently screened, selected and 
      extracted data, and assessed methodological quality of relevant studies using the 
      COSMIN checklist. From 792 records identified, 36 studies were included. The 
      number of participants ranged from 45 to 6469, mean age from 56 to 73 years, and 
      mean forced expiratory volume in 1 s from 39% to 98% predicted. Internal 
      consistency (reliability) was 0.85-0.98, and test-retest reliability was 
      0.80-0.96. Convergent and longitudinal validity using Pearson's correlation 
      coefficient were: SGRQ-C 0.69-0.82 and 0.63, CCQ 0.68-0.78 and 0.60, and mMRC 
      0.29-0.61 and 0.20, respectively. Scores differed with GOLD stages, exacerbation 
      and mMRC grades. Mean scores decreased with pulmonary rehabilitation (2.2-3 
      units) and increased at exacerbation onset (4.7 units). Only one study with 
      adequate methodology reported an MCID of 2 units and 3.3-3.8 units using the 
      anchor-based approach and distribution-based approach, respectively. Most studies 
      had fair methodological quality. We conclude that the studies support the 
      reliability and validity of the CAT and that the tool is responsive to 
      interventions, although the MCID remains debatable.
CI  - (c)ERS 2014.
FAU - Gupta, Nisha
AU  - Gupta N
AD  - Respiratory Epidemiology and Clinical Research Unit, McGill University Health 
      Centre, McGill University, Montreal, QC, Canada Dept of Epidemiology, 
      Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada.
FAU - Pinto, Lancelot M
AU  - Pinto LM
AD  - Respiratory Epidemiology and Clinical Research Unit, McGill University Health 
      Centre, McGill University, Montreal, QC, Canada.
FAU - Morogan, Andreea
AU  - Morogan A
AD  - Respiratory Epidemiology and Clinical Research Unit, McGill University Health 
      Centre, McGill University, Montreal, QC, Canada.
FAU - Bourbeau, Jean
AU  - Bourbeau J
AD  - Respiratory Epidemiology and Clinical Research Unit, McGill University Health 
      Centre, McGill University, Montreal, QC, Canada Dept of Epidemiology, 
      Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada 
      jean.bourbeau@mcgill.ca.
LA  - eng
GR  - IRO-93326/Canadian Institutes of Health Research/Canada
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Review
PT  - Systematic Review
DEP - 20140703
PL  - England
TA  - Eur Respir J
JT  - The European respiratory journal
JID - 8803460
SB  - IM
CIN - Eur Respir J. 2014 Oct;44(4):833-4. PMID: 25271221
MH  - Humans
MH  - Psychometrics
MH  - *Pulmonary Disease, Chronic Obstructive/diagnosis
MH  - *Quality of Life
MH  - Reproducibility of Results
MH  - *Surveys and Questionnaires
EDAT- 2014/07/06 06:00
MHDA- 2015/06/24 06:00
CRDT- 2014/07/05 06:00
PHST- 2014/07/05 06:00 [entrez]
PHST- 2014/07/06 06:00 [pubmed]
PHST- 2015/06/24 06:00 [medline]
AID - 09031936.00025214 [pii]
AID - 10.1183/09031936.00025214 [doi]
PST - ppublish
SO  - Eur Respir J. 2014 Oct;44(4):873-84. doi: 10.1183/09031936.00025214. Epub 2014 
      Jul 3.