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A global measure of sickness behaviour: Development of the Sickness Questionnaire
Stockholm University, Faculty of Social Sciences, Stress Research Institute. Karolinska Institutet, Sweden.ORCID iD: 0000-0003-0203-7977
Stockholm University, Faculty of Social Sciences, Stress Research Institute. Karolinska Institutet, Sweden.
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2018 (English)In: Journal of Health Psychology, ISSN 1359-1053, E-ISSN 1461-7277, Vol. 23, no 11, p. 1452-1463Article in journal (Refereed) Published
Abstract [en]

Symptoms after inflammatory activation, so-called sickness behaviour, overlap with trans-diagnostic complaints. As no self-report questionnaire to assess sickness behaviour exists, we aimed to develop such an instrument, the Sickness Questionnaire. Items responsive to experimentally induced inflammatory activation (randomized double-blind study endotoxin (0.6 ng/kg) versus placebo, n = 52) were selected and the statistical properties were examined in 172 primary care patients. A principal component analysis indicated a one-factor solution (Cronbach's alpha = .86). This 10-item scale correlated with depression ( β = .41, p < .001), anxiety ( β = .36, p < .001), self-rated health ( β = .28, p < .001) and a single item of feeling sick ( β = .55, p < .001). The results support the adequacy of Sickness Questionnaire as a brief assessment instrument of perceived sickness behaviour.

Place, publisher, year, edition, pages
2018. Vol. 23, no 11, p. 1452-1463
Keywords [en]
endotoxin, sickness behaviour, Sickness Questionnaire, sickness response, validation
National Category
Applied Psychology
Identifiers
URN: urn:nbn:se:su:diva-151362DOI: 10.1177/1359105316659917ISI: 000443365600006PubMedID: 27458105OAI: oai:DiVA.org:su-151362DiVA, id: diva2:1172669
Available from: 2018-01-10 Created: 2018-01-10 Last updated: 2020-02-06Bibliographically approved

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