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The clinical psychological diagnostic system (KPD-38): sensitivity to change and validity of a self-report instrument for outcome monitoring and quality assurance


Moessner, M; Gallas, C; Haug, Severin; Kordy, H (2011). The clinical psychological diagnostic system (KPD-38): sensitivity to change and validity of a self-report instrument for outcome monitoring and quality assurance. Clinical Psychology & Psychotherapy, 18(4):331-338.

Abstract

BACKGROUND:
Monitoring psychotherapeutic progress requires valid and economic measures to detect change of clinical relevance. We addressed validity and sensitivity to change of the 'Klinisch Psychologisches Diagnosesystem 38' (KPD-38, Clinical Psychological Diagnosis System), an instrument for outcome monitoring and quality assurance.
METHODS:
Data from an inpatient sample (n = 1.377) were used to investigate the concurrent validity, the sensitivity to change, and the criterion validity of the KPD-38 in comparison to the Outcome Questionnaire (OQ-45) and the Brief Symptom Inventory (BSI).
RESULTS:
Sensitivity-specificity analyses showed similar sensitivity and higher specificity for the KPD-38 scales compared with the BSI and OQ total scores. Change rates on the KPD-38 distress scale (DIS) were found to be lower than on the BSI (KPD-38 DIS: 36.6%, GSI: 67.7%) and the OQ-45 (KPD-38 DIS: 44.3%, OQ tot: 57.1%) total scores. Concordance was low with the BSI ([κ = 0.24] and moderate with the OQ-45 [κ = 0.45]).
DISCUSSION:
Implications for applications in the field of outcome assessment and the challenge of further validation are discussed. The relation between sensitivity to change and criterion validity is highlighted.

Abstract

BACKGROUND:
Monitoring psychotherapeutic progress requires valid and economic measures to detect change of clinical relevance. We addressed validity and sensitivity to change of the 'Klinisch Psychologisches Diagnosesystem 38' (KPD-38, Clinical Psychological Diagnosis System), an instrument for outcome monitoring and quality assurance.
METHODS:
Data from an inpatient sample (n = 1.377) were used to investigate the concurrent validity, the sensitivity to change, and the criterion validity of the KPD-38 in comparison to the Outcome Questionnaire (OQ-45) and the Brief Symptom Inventory (BSI).
RESULTS:
Sensitivity-specificity analyses showed similar sensitivity and higher specificity for the KPD-38 scales compared with the BSI and OQ total scores. Change rates on the KPD-38 distress scale (DIS) were found to be lower than on the BSI (KPD-38 DIS: 36.6%, GSI: 67.7%) and the OQ-45 (KPD-38 DIS: 44.3%, OQ tot: 57.1%) total scores. Concordance was low with the BSI ([κ = 0.24] and moderate with the OQ-45 [κ = 0.45]).
DISCUSSION:
Implications for applications in the field of outcome assessment and the challenge of further validation are discussed. The relation between sensitivity to change and criterion validity is highlighted.

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Additional indexing

Item Type:Journal Article, refereed, further contribution
Communities & Collections:04 Faculty of Medicine > Swiss Research Institute for Public Health and Addiction
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2011
Deposited On:28 Jan 2012 15:03
Last Modified:17 Feb 2018 14:56
Publisher:Wiley-Blackwell
ISSN:1063-3995
OA Status:Closed
Publisher DOI:https://doi.org/10.1002/cpp.717
PubMed ID:20812367

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