title: Korean Version of Inventory of Complicated Grief Scale: Psychometric Properties in Korean Adolescents.
abstract: We aimed to validate the Inventory of Complicated Grief (ICG)-Korean version among 1,138 Korean adolescents, representing a response rate of 57% of 1,997 students. Participants completed a set of questionnaires including demographic variables (age, sex, years of education, experience of grief), the ICG, the Children's Depression Inventory (CDI) and the Lifetime Incidence of Traumatic Events-Child (LITE-C). Exploratory factor analysis was performed to determine whether the ICG items indicated complicated grief in Korean adolescents. The internal consistency of the ICG-Korean version was Cronbach's α=0.87. The test-retest reliability for a randomly selected sample of 314 participants in 2 weeks was r=0.75 (P<0.001). Concurrent validity was assessed using a correlation between the ICG total scores and the CDI total scores (r=0.75, P<0.001). The criterion-related validity based on the comparison of ICG total scores between adolescents without complicated grief (1.2 ± 3.7) and adolescent with complicated grief (3.2 ± 6.6) groups was relatively high (t=5.71, P<0.001). The data acquired from the 1,138 students was acceptable for a factor analysis (Kaiser-Meyer-Olkin Measure of Sampling Adequacy=0.911; Bartlett's Test of Sphericity, χ(2)=13,144.7, P<0.001). After omission of 3 items, the value of Cronbach's α increased from 0.87 for the 19-item ICG-Korean version to 0.93 for the 16-item ICG-Korean version. These results suggest that the ICG is a useful tool in assessing for complicated grief in Korean adolescents. However, the 16-item version of the ICG appeared to be more valid compared to the 19-item version of the ICG. We suggest that the 16-item version of the ICG be used to screen for complicated grief in Korean adolescents.
authors.affiliation: Department of Psychiatry, Chung Ang University Hospital, Seoul, Korea.
authors.forename: Doug Hyun
authors.identifier: 0000-0002-8314-0767
authors.initials: DH
authors.lastname: Han
authors.affiliation: Department of Psychiatry, College of Medicine, Dankook University, Cheonan, Korea.
authors.forename: Jung Jae
authors.identifier: 0000-0002-0828-3557
authors.initials: JJ
authors.lastname: Lee
authors.affiliation: Department of Psychiatry, Seoul Metropolitan Children's Hospital, Seoul, Korea.
authors.forename: Duk-Soo
authors.identifier: 0000-0001-7878-3410
authors.initials: DS
authors.lastname: Moon
authors.affiliation: Student Mental Health Research & Resource Center, Kyungpook National University Medical Center, Daegu, Korea.
authors.forename: Myoung-Jin
authors.identifier: 0000-0001-7467-5842
authors.initials: MJ
authors.lastname: Cha
authors.affiliation: Student Mental Health Research & Resource Center, Kyungpook National University Medical Center, Daegu, Korea.
authors.forename: Min A
authors.identifier: 0000-0003-1053-9299
authors.initials: MA
authors.lastname: Kim
authors.affiliation: Korean Brain Research Institute - Student Mental Health Research Center, Daegu, Korea.
authors.forename: Seonyeong
authors.identifier: 0000-0002-0404-4858
authors.initials: S
authors.lastname: Min
authors.affiliation: Department of Social Welfare, Kyungpook National University Graduate School, Daegu, Korea.
authors.forename: Ji Hoon
authors.identifier: 0000-0002-1296-5251
authors.initials: JH
authors.lastname: Yang
authors.affiliation: Research Division, Korea Brain Research Institute, Daegu, Korea.
authors.forename: Eun Jeong
authors.identifier: 0000-0002-0934-3187
authors.initials: EJ
authors.lastname: Lee
authors.affiliation: School of Social Welfare, Soongsil University, Seoul, Korea.
authors.forename: Seo Koo
authors.identifier: 0000-0003-2023-5416
authors.initials: SK
authors.lastname: Yoo
authors.affiliation: Student Mental Health Research & Resource Center, Kyungpook National University Medical Center, Daegu, Korea.; Department of Psychiatry, Kyungpook National University Hospital, Daegu, Korea.
authors.forename: Un-Sun
authors.identifier: 0000-0003-3871-1425
authors.initials: US
authors.lastname: Chung
mesh_terms: D000293:Adolescent; D002648:Child; D005163:Factor Analysis, Statistical; D005260:Female; D006117:Grief; D006801:Humans; D008297:Male; D011594:Psychometrics / Q000379:methods*; D015203:Reproducibility of Results; D056910:Republic of Korea; D011795:Surveys and Questionnaires
keywords: Adolescent; Complicated Grief; Factor Analysis, Statistical; Reliability of Results; Screening