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Review
. 2002 Mar:180:205-9.
doi: 10.1192/bjp.180.3.205.

Impact of Event Scale: psychometric properties

Eva C Sundin  1 , Mardi J Horowitz
Affiliations
Review

Impact of Event Scale: psychometric properties

Eva C Sundin et al. Br J Psychiatry. 2002 Mar.

Abstract

Background: For more than 20 years, the Impact of Event Scale (IES) has been widely used as a measure of stress reactions after traumatic events.

Aims: To review studies that evaluated the IES's psychometric properties.

Method: Literature review.

Results: The results indicated that the IES's two-factor structure is stable over different types of events, that it can discriminate between stress reactions at different times after the event, and that it has convergent validity with observer-diagnosed post-traumatic stress disorder. The use of IES in many psychopharmacological trials and outcome studies is supportive of the measure's clinical relevance.

Conclusions: The IES is a useful measure of stress reactions after a range of traumatic events, and it is valuable for detecting individuals who require treatment.

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