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Reliability and validity of the Korean version of the Impact of Event Scale-Revised.
Compr Psychiatry. 2009 Jul-Aug; 50(4):385-90.CP

Abstract

OBJECTIVES

The aim of this study was to explore the reliability and validity of the Impact of Event Scale-Revised Korean version (IES-R-K), a self-report scale for assessment of posttraumatic stress disorder (PTSD).

METHODS

The original Impact of Event Scale-Revised was translated into Korean, and the comparability of content was verified through back-translation procedures. This multicenter study included 93 patients with PTSD, 73 nonpsychotic psychiatric patients, and 88 healthy controls drawn from 18 hospitals across the country. The subjects were assessed using IES-R-K, Clinician-Administered PTSD Scale (CAPS), Beck Depression Inventory, and State Trait Anxiety Inventory (STAI; state anxiety subscale [STAI-S], trait anxiety subscale [STAI-T]) scales.

RESULTS

In the reliability test, Cronbach alpha coefficient and test-retest reliability were .93 and 0.91, respectively, indicating that the IES-R-K has good internal consistency. One-way analysis of variance revealed significant differences in IES-R-K scores among the patients with PTSD, nonpsychotic psychiatric patients, and healthy controls (F = 139.1, P < .001). Duncan post hoc test showed the significant differences among the 3 groups. To assess the validity of the IES-R-K, correlation coefficient between the IES-R-K and CAPS, STAI-S, and STAI-T was calculated. We found that there was a relatively high degree of correlation between the IES-R-K and CAPS (r = 0.92, P < .001). However, there was a relatively less degree of correlation between STAI-S and STAI-T and IES-R-K (r = 0.30, P < .001). Taken these together, IES-R-K showed good discriminant validity.

CONCLUSION

The IES-R-K showed good reliability and validity for the assessment of PTSD symptom severity. The IES-R-K is a useful instrument for assessing PTSD symptoms in Korea.

Authors+Show Affiliations

Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, South Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Multicenter Study
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19486738

Citation

Lim, Hyun-Kook, et al. "Reliability and Validity of the Korean Version of the Impact of Event Scale-Revised." Comprehensive Psychiatry, vol. 50, no. 4, 2009, pp. 385-90.
Lim HK, Woo JM, Kim TS, et al. Reliability and validity of the Korean version of the Impact of Event Scale-Revised. Compr Psychiatry. 2009;50(4):385-90.
Lim, H. K., Woo, J. M., Kim, T. S., Kim, T. H., Choi, K. S., Chung, S. K., Chee, I. S., Lee, K. U., Paik, K. C., Seo, H. J., Kim, W., Jin, B., & Chae, J. H. (2009). Reliability and validity of the Korean version of the Impact of Event Scale-Revised. Comprehensive Psychiatry, 50(4), 385-90. https://doi.org/10.1016/j.comppsych.2008.09.011
Lim HK, et al. Reliability and Validity of the Korean Version of the Impact of Event Scale-Revised. Compr Psychiatry. 2009 Jul-Aug;50(4):385-90. PubMed PMID: 19486738.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reliability and validity of the Korean version of the Impact of Event Scale-Revised. AU - Lim,Hyun-Kook, AU - Woo,Jong-Min, AU - Kim,Tae-Suk, AU - Kim,Tae-Hyung, AU - Choi,Kyeong-Sook, AU - Chung,Sang-Keun, AU - Chee,Ik-Seoung, AU - Lee,Kyoung-Uk, AU - Paik,Ki Chung, AU - Seo,Ho-Jun, AU - Kim,Won, AU - Jin,Bora, AU - Chae,Jeong-Ho, AU - ,, Y1 - 2008/11/21/ PY - 2008/05/06/received PY - 2008/09/22/revised PY - 2008/09/22/accepted PY - 2009/6/3/entrez PY - 2009/6/3/pubmed PY - 2009/8/14/medline SP - 385 EP - 90 JF - Comprehensive psychiatry JO - Compr Psychiatry VL - 50 IS - 4 N2 - OBJECTIVES: The aim of this study was to explore the reliability and validity of the Impact of Event Scale-Revised Korean version (IES-R-K), a self-report scale for assessment of posttraumatic stress disorder (PTSD). METHODS: The original Impact of Event Scale-Revised was translated into Korean, and the comparability of content was verified through back-translation procedures. This multicenter study included 93 patients with PTSD, 73 nonpsychotic psychiatric patients, and 88 healthy controls drawn from 18 hospitals across the country. The subjects were assessed using IES-R-K, Clinician-Administered PTSD Scale (CAPS), Beck Depression Inventory, and State Trait Anxiety Inventory (STAI; state anxiety subscale [STAI-S], trait anxiety subscale [STAI-T]) scales. RESULTS: In the reliability test, Cronbach alpha coefficient and test-retest reliability were .93 and 0.91, respectively, indicating that the IES-R-K has good internal consistency. One-way analysis of variance revealed significant differences in IES-R-K scores among the patients with PTSD, nonpsychotic psychiatric patients, and healthy controls (F = 139.1, P < .001). Duncan post hoc test showed the significant differences among the 3 groups. To assess the validity of the IES-R-K, correlation coefficient between the IES-R-K and CAPS, STAI-S, and STAI-T was calculated. We found that there was a relatively high degree of correlation between the IES-R-K and CAPS (r = 0.92, P < .001). However, there was a relatively less degree of correlation between STAI-S and STAI-T and IES-R-K (r = 0.30, P < .001). Taken these together, IES-R-K showed good discriminant validity. CONCLUSION: The IES-R-K showed good reliability and validity for the assessment of PTSD symptom severity. The IES-R-K is a useful instrument for assessing PTSD symptoms in Korea. SN - 1532-8384 UR - https://www.unboundmedicine.com/medline/citation/19486738/Reliability_and_validity_of_the_Korean_version_of_the_Impact_of_Event_Scale_Revised_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0010-440X(08)00148-X DB - PRIME DP - Unbound Medicine ER -