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Psychometric properties of Internet-administered measures of health anxiety: An investigation of the Health Anxiety Inventory, the Illness Attitude Scales, and the Whiteley Index.
Division of Psychology, Karolinska Institutet, Stockholm, Sweden; Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden.
Osher Center for Integrative Medicine, Stockholm, Sweden.
Division of Psychology, Karolinska Institutet, Stockholm, Sweden; Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden.
Linköping University, Department of Behavioural Sciences and Learning, Psychology. Linköping University, Faculty of Arts and Sciences. Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden; Stress Research Institute, Stockholm University, Stockholm, Sweden. (Internet, health and clinical psychology research group)ORCID iD: 0000-0003-4753-6745
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2015 (English)In: Journal of Anxiety Disorders, ISSN 0887-6185, E-ISSN 1873-7897, Vol. 31, 32-37 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The Health Anxiety Inventory (HAI), the Illness Attitude Scales (IAS), and the Whiteley Index (WI) are three of the most widely used health anxiety measures, but their psychometric properties have not been investigated when administered via the Internet.

METHODS: We investigated the three instruments' test-retest reliability, internal consistency, convergent, and discriminant validity and sensitivity to change using one sample (n=111) of participants with severe health anxiety and one sample of healthy controls (n=92).

RESULTS: The HAI, IAS, and WI showed high test-retest reliability (rs≥.80), good convergent, and discriminant validity and were sensitive to detect change. The HAI and IAS (αs≥.85), but not the WI (αs≤.60) demonstrated high internal consistency.

CONCLUSIONS: The HAI, IAS, and WI have good psychometric properties, except for the low internal consistency of WI, when used as Internet-administered measures of health anxiety. Using these measures over the Internet offers highly important advantages such as increased ease of administration, reduced attrition, and cost-efficient treatment evaluation.

Place, publisher, year, edition, pages
2015. Vol. 31, 32-37 p.
National Category
Applied Psychology
Identifiers
URN: urn:nbn:se:liu:diva-117120DOI: 10.1016/j.janxdis.2015.01.008ISI: 000353075500005PubMedID: 25723780OAI: oai:DiVA.org:liu-117120DiVA: diva2:805832
Available from: 2015-04-16 Created: 2015-04-16 Last updated: 2017-12-04

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Andersson, Gerhard

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