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Reliability and construct validity of the pain distress inventory
Augustine Osman1, Francisco X Barrios, Peter M Gutierrez
1Department of Psychology, The University of Northern Iowa, Cedar Falls, Iowa, USA. augustine.osman@uni.edu
Journal of Behavioral Medicine
|June 17, 2005
Summary
The Pain Distress Inventory (PDI) demonstrates reliable and valid measurement of pain distress. Further studies confirm its psychometric properties across diverse populations.
Area of Science:
- Psychological assessment
- Clinical psychology
- Psychometrics
Background:
- The Pain Distress Inventory (PDI) is a self-report measure.
- Previous research established its initial development and psychometric properties.
Purpose of the Study:
- To further evaluate the reliability and construct validity of the PDI.
- To confirm the PDI's factor structure and measurement invariance across demographic groups.
Main Methods:
- Three studies were conducted involving exploratory and confirmatory factor analysis.
- Multisample analyses were used to assess measurement invariance.
- Internal consistency and known-groups validity were examined.
Main Results:
- The four-factor oblique solution of the PDI was replicated.
- Strong evidence for criterion-related validity was found.
- Measurement invariance was supported across African American and Caucasian young adults.
- Good internal consistency reliability was observed.
- Known-groups validity analyses supported construct validity.
Conclusions:
- The PDI is a reliable and valid instrument for assessing pain distress.
- The PDI's structure is equivalent across different ethnic groups.
- The PDI demonstrates strong psychometric properties for clinical and research use.