liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
A validation of the pain interference index in adults with longstanding pain
Karolinska University Hospital, Sweden; Karolinska Institute, Sweden.
Linköping University, Department of Behavioural Sciences and Learning. Linköping University, Faculty of Educational Sciences. Karolinska University Hospital, Sweden.
Karolinska University Hospital, Sweden; Karolinska Institute, Sweden.
Karolinska University Hospital, Sweden; Karolinska Institute, Sweden.
Show others and affiliations
2016 (English)In: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 60, no 2, 250-258 p.Article in journal (Refereed) PublishedText
Abstract [en]

Background: Chronic pain is a major health problem and more knowledge is needed regarding the interference of pain on behaviors in different life domains. Clinically useful and statistically sound pain interference measures are highly important. Studies on youths have shown that the Pain Interference Index (PII) is a reliable and valid instrument that is sensitive to change following behavioral treatment. This measure may also have utility for adults, but no study has so far evaluated the statistical properties of the PII for long-standing pain in adults. Methods: Data were collected from 239 consecutive adults with non-specific chronic pain referred to a tertiary pain clinic. We investigated the factor structure of items using a principal component analysis. Cronbachs alpha was calculated to assess internal consistency. The questionnaires ability to predict levels of, e.g., disability was analyzed by means of regression analyses. Results: Analyses illustrated the adequacy of a one-factor solution with six items. Cronbachs alpha (0.85) suggested a satisfactory internal consistency among items. The PII explained significant amounts of variance in pain disability, physical, and mental health-related quality of life and depression, suggesting concurrent criteria validity. Conclusion: The PII is a brief questionnaire with reliable and valid statistical properties to assess pain interference in adults. Other studies support the reliability and validity of PII for use with youths, and now the PII can be used to analyze the influence of pain on behaviors across age groups. Potentially, the PII can also be used as an outcome measure in clinical trials.

Place, publisher, year, edition, pages
WILEY-BLACKWELL , 2016. Vol. 60, no 2, 250-258 p.
National Category
Clinical Medicine
URN: urn:nbn:se:liu:diva-124623DOI: 10.1111/aas.12599ISI: 000368139700013PubMedID: 26310686OAI: diva2:901813

Funding Agencies|Department of Psychology at the Karolinska University Hospital, Stockholm; Stockholm City Council; Karolinska Institutet

Available from: 2016-02-09 Created: 2016-02-08 Last updated: 2016-02-09

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Zetterqvist, Vendela
By organisation
Department of Behavioural Sciences and LearningFaculty of Educational Sciences
In the same journal
Acta Anaesthesiologica Scandinavica
Clinical Medicine

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 174 hits
ReferencesLink to record
Permanent link

Direct link