본 연구에서는 한국판 지속비애 척도의 타당도와 신뢰도를 검증하고자 하였다. 이를 위해 ‘가까운 사람의 죽음을 경험한’ 국내 성인 706명을 대상으로 온라인 설문을 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 탐색적 요인분석을 실시한 결과, 한국판 지속비애척도는 ‘트라우마적 디스트레스(Traumatic distress)’, ‘분리 디스트레스(Separation distress)’의 2요인이 전체분산의 66.45%를 설명하는 것으로 나타났다. 둘째, 탐색적 요인분석을 통해 요인구조가 추출된 한국판 PG-13의 신뢰도는 전체 척도뿐만 아니라 각 하위요인 모두 높은 내적 합치도를 보였다. 셋째, 확인적 요인분석 결과 한국판 PG-13이 2요인 구조에 의해 잘 설명된다는 것을 확인할 수 있었다. 넷째, 공인타당도와 집단변별타당도 검증을 통해 척도의 외적 타당도를 확보하고자 하였다. 전체 척도는 우울, 불안, PTSD와 유의한 정적 상관이 있는 것으로 나타났으며, 트라우마적 죽음으로 인한 사별을 경험한 집단의 지속비애 수준이 비트라우마적 죽음으로 인한 사별을 경험한 집단의 지속비애 수준보다 더 높은 것으로 나타났다. 이와 같은 결과는 한국판 PG-13이 국내 성인의 지속비애를 측정하는 데 있어 타당한 도구임을 나타낸다. 마지막으로 연구의 의의와 제한점에 대해 논의하였다.
This study aims to examine the validity and reliability of the Korean version of the Prolonged Grief Disorder Scale (PG-13-K). For this study, an online survey was conducted with 706 Korean adults who have lost a loved one. Results were as follows: First, principal factor analysis identified a two-factor structure: ‘Traumatic distress’ and ‘Separation distress’ accounted for 66.45% of the total variance. Second, high internal consistencies were found for PG-13-K. Third, confirmatory factor analysis supported the two factors structure of the PG-13-K. Fourth, the PG-13-K had positive correlations with both the IES-R-K (PTSD) and BSI-18 (depression, anxiety). The mean score of the PG-13-K was significantly higher in participants experiencing grief due to traumatic death vs. natural death. Overall, the PG-13-K is a valid measurement tool for prolonged grief within the Korean population. Implications and limitations are discussed.
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