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The Experience of Cognitive Intrusion of Pain

scale development and validation

Attridge, Nina; Crombez, Geert; Van Ryckeghem, Dimitri; Keogh, Edmund; Eccleston, Christopher

doi: 10.1097/j.pain.0000000000000257
Research Paper

Patients with chronic pain often report their cognition to be impaired by pain, and this observation has been supported by numerous studies measuring the effects of pain on cognitive task performance. Furthermore, cognitive intrusion by pain has been identified as one of 3 components of pain anxiety, alongside general distress and fear of pain. Although cognitive intrusion is a critical characteristic of pain, no specific measure designed to capture its effects exists. In 3 studies, we describe the initial development and validation of a new measure of pain interruption: the Experience of Cognitive Intrusion of Pain (ECIP) scale. In study 1, the ECIP scale was administered to a general population sample to assess its structure and construct validity. In study 2, the factor structure of the ECIP scale was confirmed in a large general population sample experiencing no pain, acute pain, or chronic pain. In study 3, we examined the predictive value of the ECIP scale in pain-related disability in fibromyalgia patients. The ECIP scale scores followed a normal distribution with good variance in a general population sample. The scale had high internal reliability and a clear 1-component structure. It differentiated between chronic pain and control groups, and it was a significant predictor of pain-related disability over and above pain intensity. Repairing attentional interruption from pain may become a novel target for pain management interventions, both pharmacologic and nonpharmacologic.

The Experience of Cognitive Intrusion of Pain scale was unidimensional, showed construct validity, differentiated fibromyalgia patients and controls, and predicted pain disability.

aCentre for Pain Research, Department for Health, University of Bath, Bath, United Kingdom

bDepartment of Experimental-Clinical and Health Psychology, Ghent University, Ghent, Belgium

cDepartment of Psychology, University of Bath, Bath, United Kingdom

Corresponding author. Address: Centre for Pain Research, University of Bath, Bath, United Kingdom BA2 7AY. Tel: +441225 384225. E-mail address: (N. Attridge).

Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.

Received December 19, 2014

Received in revised form May 20, 2015

Accepted June 01, 2015

© 2015 International Association for the Study of Pain
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