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Abstract
Objectives
This study was conducted for development of the Korean version of the Posttraumatic stress disorder (PTSD) Checklist civilian version (PCL-C) by evaluating its reliability and validity for the North Korean defectors population.
Methods
A total of 69 North Korean defectors participated in this study. All patients were recruited from the psychiatric outpatient or inpatient ward. We categorized the participants into two groups according to the Clinician-Administered PTSD Scale (CAPS) diagnosis of PTSD (PTSD, n=32 ; Non-PTSD, n=37). All Subjects completed psychometric assessments, including the PCL-C, Minnesota Multiphasic Personality Inventory (MMPI-PTSD), Beck Depression Inventory (BDI), and State-Trait Anxiety Inventory (STAI).
Results
Findings provided support for psychometric properties of the Korean version of the PCL-C. The PCL-C showed good internal consistency (Cronbach α=0.93), and a significantly positive correlation with CAPS and MMPI-PTSD (r=0.47, r=0.61, respectively). The optimal cutoff point of PCL-C for the North Korean defectors was at a total score of 56 with sensitivity and specificity of 0.88, and 0.50, respectively.
Figures and Tables
Fig. 1
The ROC curve for the PCL-C compared to the CAPS diagnosis of PTSD (AUC=0.73). ROC : Receiver operating characteristic, PCL-C : PCL-Checklist civilian version, CAPS : Clinician-Administered PTSD Scale, AUC : Area under the curve.
Table 3
Means, standard deviations (SD) and Pearson's correlations among BDI, STAI-S, STAI-T, PCL-C, MMPI-PTSD, CAPS
*: p<0.01. BDI : Beck Depression Inventory, STAI-S : State-Trait Anxiety Inventory (state), STAI-T : State-Trait Anxiety Inventory (trait), PCL-C : PTSD Checklist civilian version, MMPI-PTSD : Minnesota Multiphasic Personality Inventory Posttraumatic Stress Disorder Scale, CAPS : Clinician-Administered PTSD Scale, PTSD : Posttraumatic stress disorder
Table 4
Sensitivity, specificity, predictive value, and efficiency of the PCL-C for 6 selected total scores relative to CAPS-based diagnosis of PTSD
*: Optimal cut-off score, Sensitivity : true positives/(true positives+false negatives), Specificity : true negatives/(true negatives+false positives), Positive predictive value : true positives/(true positives+false positives), Negative predictive value : true negatives/(true negatives+false negatives), Efficiency : (true positives+true negatives)/(true positives+true negatives+false positives+false negatives). PCL-C : PTSD Checklist civilian version, PTSD : Posttraumatic stress disorder, CAPS : Clinician-Administered PTSD Scale
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