Development and validity of the Patient-centred COPD Questionnaire (PCQ)

A.M. Pommer, L. Prins, D. van Ranst, J. Meijer, A van't Hul, J. Janssen, F. Pouwer, V.J.M. Pop

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Objective
COPD-guidelines recommend regular evaluation of both the degree of airway obstruction and health-status to provide adequate treatment. Numerous health-status questionnaires have been developed of which the ‘Clinical-COPD-Questionnaire’ and the ‘COPD-Assessment-Test’ are best known; although highly recommended, both have several limitations regarding structure, content, and/or methodological qualities. In the present study a new COPD-specific instrument was developed to measure impairment: the ‘Patient-centred-COPD-Questionnaire’ (PCQ).
Methods
Six focus groups with COPD patients and (lung) health care providers from primary, secondary and tertiary (rehabilitation) care were formed to discuss aspects of COPD most relevant to patients' daily lives. Eighty candidate items were derived for explorative factor analyses (EFA) to test their psychometric properties (study I, n = 541). These resulted in an 18-item scale that was further explored by confirmatory factor analyses (CFA) and construct and concurrent validity assessment (study II, n = 412).
Results
EFA in study I suggested a reliable three component solution (‘shortness of breath’, ‘acceptance of COPD’ and ‘confidence in care’). In study II this model was confirmed with CFA, and significant and clinically relevant correlations were found between the PCQ subscales, and other COPD specific and general health questionnaires. Furthermore, multivariate analyses of covariance revealed that more severely ill patients reported more impairment.
Conclusions
The PCQ is a questionnaire with three dimensions to assess the impact of COPD on daily life that is easy to complete. For the first time, a dimension referring to ‘confidence in care’ is included in a tool that assesses COPD-related impairment.
Keywords: COPD, Scale development, Patient-centred COPD Questionnaire,
Confidence in care, Acceptance, Validity
Original languageEnglish
Pages (from-to)563-571
JournalJournal of Psychosomatic Research
Volume75
Issue number6
DOIs
Publication statusPublished - 2013

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Statistical Factor Analysis
Surveys and Questionnaires
Focus Groups
Health Personnel
Multivariate Analysis

Cite this

Pommer, A.M. ; Prins, L. ; van Ranst, D. ; Meijer, J. ; Hul, A van't ; Janssen, J. ; Pouwer, F. ; Pop, V.J.M. / Development and validity of the Patient-centred COPD Questionnaire (PCQ). In: Journal of Psychosomatic Research. 2013 ; Vol. 75, No. 6. pp. 563-571.
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abstract = "ObjectiveCOPD-guidelines recommend regular evaluation of both the degree of airway obstruction and health-status to provide adequate treatment. Numerous health-status questionnaires have been developed of which the ‘Clinical-COPD-Questionnaire’ and the ‘COPD-Assessment-Test’ are best known; although highly recommended, both have several limitations regarding structure, content, and/or methodological qualities. In the present study a new COPD-specific instrument was developed to measure impairment: the ‘Patient-centred-COPD-Questionnaire’ (PCQ).MethodsSix focus groups with COPD patients and (lung) health care providers from primary, secondary and tertiary (rehabilitation) care were formed to discuss aspects of COPD most relevant to patients' daily lives. Eighty candidate items were derived for explorative factor analyses (EFA) to test their psychometric properties (study I, n = 541). These resulted in an 18-item scale that was further explored by confirmatory factor analyses (CFA) and construct and concurrent validity assessment (study II, n = 412).ResultsEFA in study I suggested a reliable three component solution (‘shortness of breath’, ‘acceptance of COPD’ and ‘confidence in care’). In study II this model was confirmed with CFA, and significant and clinically relevant correlations were found between the PCQ subscales, and other COPD specific and general health questionnaires. Furthermore, multivariate analyses of covariance revealed that more severely ill patients reported more impairment.ConclusionsThe PCQ is a questionnaire with three dimensions to assess the impact of COPD on daily life that is easy to complete. For the first time, a dimension referring to ‘confidence in care’ is included in a tool that assesses COPD-related impairment.Keywords: COPD, Scale development, Patient-centred COPD Questionnaire,Confidence in care, Acceptance, Validity",
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Development and validity of the Patient-centred COPD Questionnaire (PCQ). / Pommer, A.M.; Prins, L.; van Ranst, D.; Meijer, J.; Hul, A van't; Janssen, J.; Pouwer, F.; Pop, V.J.M.

In: Journal of Psychosomatic Research, Vol. 75, No. 6, 2013, p. 563-571.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Development and validity of the Patient-centred COPD Questionnaire (PCQ)

AU - Pommer, A.M.

AU - Prins, L.

AU - van Ranst, D.

AU - Meijer, J.

AU - Hul, A van't

AU - Janssen, J.

AU - Pouwer, F.

AU - Pop, V.J.M.

PY - 2013

Y1 - 2013

N2 - ObjectiveCOPD-guidelines recommend regular evaluation of both the degree of airway obstruction and health-status to provide adequate treatment. Numerous health-status questionnaires have been developed of which the ‘Clinical-COPD-Questionnaire’ and the ‘COPD-Assessment-Test’ are best known; although highly recommended, both have several limitations regarding structure, content, and/or methodological qualities. In the present study a new COPD-specific instrument was developed to measure impairment: the ‘Patient-centred-COPD-Questionnaire’ (PCQ).MethodsSix focus groups with COPD patients and (lung) health care providers from primary, secondary and tertiary (rehabilitation) care were formed to discuss aspects of COPD most relevant to patients' daily lives. Eighty candidate items were derived for explorative factor analyses (EFA) to test their psychometric properties (study I, n = 541). These resulted in an 18-item scale that was further explored by confirmatory factor analyses (CFA) and construct and concurrent validity assessment (study II, n = 412).ResultsEFA in study I suggested a reliable three component solution (‘shortness of breath’, ‘acceptance of COPD’ and ‘confidence in care’). In study II this model was confirmed with CFA, and significant and clinically relevant correlations were found between the PCQ subscales, and other COPD specific and general health questionnaires. Furthermore, multivariate analyses of covariance revealed that more severely ill patients reported more impairment.ConclusionsThe PCQ is a questionnaire with three dimensions to assess the impact of COPD on daily life that is easy to complete. For the first time, a dimension referring to ‘confidence in care’ is included in a tool that assesses COPD-related impairment.Keywords: COPD, Scale development, Patient-centred COPD Questionnaire,Confidence in care, Acceptance, Validity

AB - ObjectiveCOPD-guidelines recommend regular evaluation of both the degree of airway obstruction and health-status to provide adequate treatment. Numerous health-status questionnaires have been developed of which the ‘Clinical-COPD-Questionnaire’ and the ‘COPD-Assessment-Test’ are best known; although highly recommended, both have several limitations regarding structure, content, and/or methodological qualities. In the present study a new COPD-specific instrument was developed to measure impairment: the ‘Patient-centred-COPD-Questionnaire’ (PCQ).MethodsSix focus groups with COPD patients and (lung) health care providers from primary, secondary and tertiary (rehabilitation) care were formed to discuss aspects of COPD most relevant to patients' daily lives. Eighty candidate items were derived for explorative factor analyses (EFA) to test their psychometric properties (study I, n = 541). These resulted in an 18-item scale that was further explored by confirmatory factor analyses (CFA) and construct and concurrent validity assessment (study II, n = 412).ResultsEFA in study I suggested a reliable three component solution (‘shortness of breath’, ‘acceptance of COPD’ and ‘confidence in care’). In study II this model was confirmed with CFA, and significant and clinically relevant correlations were found between the PCQ subscales, and other COPD specific and general health questionnaires. Furthermore, multivariate analyses of covariance revealed that more severely ill patients reported more impairment.ConclusionsThe PCQ is a questionnaire with three dimensions to assess the impact of COPD on daily life that is easy to complete. For the first time, a dimension referring to ‘confidence in care’ is included in a tool that assesses COPD-related impairment.Keywords: COPD, Scale development, Patient-centred COPD Questionnaire,Confidence in care, Acceptance, Validity

U2 - 10.1016/j.jpsychores.2013.10.001

DO - 10.1016/j.jpsychores.2013.10.001

M3 - Article

VL - 75

SP - 563

EP - 571

JO - Journal of Psychosomatic Research

JF - Journal of Psychosomatic Research

SN - 0022-3999

IS - 6

ER -