Validity and reliability of the Thai version of the Prolonged Grief Disorder-13-Revised scale (Thai PG-13-R) in bereaved relatives
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Objectives: To translate the Prolonged Grief Disorder-13-Revised (PG-13-R) to Thai and to evaluate the validities and reliability of the Thai version of PG-13-R for evaluating the relatives of the dead persons
Methods: The PG-13-R were translated to Thai through the forward and backward translation by bilingual experts, and then compare and edit until it is close to the original version. The final Thai version was then examined in terms of content validity. Then the 106 relatives of the persons who had died for six months or longer were included into the study in order to test the psychometric properties of the Thai version of PG-13-R. These relatives were included from the Palliative Care Center and the Psychiatric Outpatient Unit of Siriraj Hospital. The data were collected with the direct or telephone interviews in order to evaluate the prolonged grief disorder with the PG-13-R, Inventory of Complicated Grief (ICG) and the prolonged grief disorder according to the DSM-5-TR criteria. Then, the validities regarding the sensitivity and specificity were evaluated by comparing PG-13-R to both ICG and DSM-5-TR. The convergent validity was analyzed by using Spearman’s rank correlation analysis as well as comparing PG-13-R and ICG. The reliability was analyzed by using Cronbach’s alpha.
Results: The Thai version of PG-13-R had item- and scale- content validity index of 1.0. By analyzing and comparing it to the ICG, it had sensitivity of 1.0 and specificity of 0.98. By comparing it to DSM-5-TR, the sensitivity was 0.89 and the specificity was 1.0. Convergent validity analysis by comparing it to the ICG demonstrated Spearman’s rho of 0.93. In the reliability analysis, it was found that Cronbach’s alpha coefficient was 0.86.
Conclusion: The Thai version of the PG-13-R has the good validities and reliability. It can be used for evaluating the prolonged grief disorder of Thai people.
Keywords: Prolonged Grief Disorder-13-Revised, validity, reliability
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บทความที่ส่งมาลงตีพิมพ์ในวารสารสมาคมจิตแพทย์ ต้องไม่เคยตีพิมพ์หรือได้รับการตอบรับให้ตีพิมพ์ในวารสารฉบับอื่น และต้องไม่อยู่ระหว่างการส่งไปตีพิมพ์ในวารสารอื่น
Lundorff M, Holmgren H, Zachariae R, Farver-Vestergaard I, O'Connor M. Prevalence of prolonged grief disorder in adult bereavement: A systematic review and meta-analysis. J Affect Disord 2017; 212: 138-49.
Salah S, Hussain S, Ahmed A, Azam A, Rafique D. Death as transformation: examining grief under the perspective of the Kubler-Ross in the selected movies. Int J Engl Linguist 2018; 9: 448.
Shear MK. Clinical practice. Complicated grief. N Engl J Med 2015; 372(2): 153-60.
Szuhany KL, Young A, Mauro C, Garcia de la Garza A, Spandorfer J, Lubin R, et al. Impact of sleep on complicated grief severity and outcomes. Depress Anxiety 2020; 37(1): 73-80.
Moayedoddin B, Markowitz JC. Abnormal grief: Should we consider a more patient-centered approach? Am J Psychother 2015; 69(4): 361-78.
Mason TM, Tofthagen CS, Buck HG. Complicated grief: Risk Factors, protective factors, and interventions. J Soc Work End Life Palliat Care 2020; 16(2): 151-74.
First MB, Yousif LH, Clarke DE, Wang PS, Gogtay N, Appelbaum PS. DSM-5-TR: overview of what's new and what's changed. World Psychiatry 2022; 21(2): 218-9.
Prigerson HG, Horowitz MJ, Jacobs SC, Parkes CM, Aslan M, Goodkin K, et al. Prolonged grief disorder: Psychometric validation of criteria proposed for DSM-V and ICD-11. PLoS Med 2009; 6(8): e1000121.
O'Connor MF. Grief: A brief history of research on how body, mind, and brain adapt. Psychosom Med 2019; 81(8): 731-8.
Miller MD. Complicated grief in late life. Dialogues Clin Neurosci 2012; 14(2): 195-202.
Prigerson HG, Maciejewski PK, Reynolds CF 3rd, Bierhals AJ, Newsom JT, Fasiczka A, et al. Inventory of Complicated Grief: a scale to measure maladaptive symptoms of loss. Psychiatry Res 1995; 59(1-2): 65-79.
Yaiyong O, Lueboonthavatchai P. Depression and grief of the elderly at the Elderly Associate in Nonthaburi Provice. J Psychiatr Assoc Thailand 2011; 56: 117-28.
Aoun SM, Breen LJ, Howting DA, Rumbold B, McNamara B, Hegney D. Who needs bereavement support? A population based survey of bereavement risk and support need. PLoS One 2015; 10(3): e0121101.
Pohlkamp L, Kreicbergs U, Prigerson HG, Sveen J. Psychometric properties of the Prolonged Grief Disorder-13 (PG-13) in bereaved Swedish parents. Psychiatry Res 2018; 267: 560-5.
Delalibera M, Coelho A, Barbosa A. Validation of prolonged grief disorder instrument for Portuguese population. Acta Med Port 2011; 24(6): 935-42.
Işıklı S, Keser E, Prigerson HG, Maciejewski PK. Validation of the prolonged grief scale (PG-13) and investigation of the prevalence and risk factors of prolonged grief disorder in Turkish bereaved samples. Death Stud 2020; 46: 628-38.
Prigerson HG, Boelen PA, Xu J, Smith KV, Maciejewski PK. Validation of the newly proposed DSM criteria for prolonged grief disorder and the PG-13-Revised (PG-13-R) scale. World Psychiatry 2021; 20: 1-11.
Sousa VD, Rojjanasrirat W. Translation, adaptation and validation of instruments or scales for use in cross-cultural health care research: a clear and user-friendly guideline. J Eval Clin Pract 2011; 17(2): 268-74.
Polit DF, Beck CT, Owen SV. Is the CVI an acceptable indicator of content validity? Appraisal and recommendations. Res Nurs Health 2007; 30(4): 459-67.
Swinkels RA, Bouter LM, Oostendorp RA, Swinkels-Meewisse IJ, Dijkstra PU, de Vet HC. Construct validity of instruments measuring impairments in body structures and function in rheumatic disorders: which constructs are selected for validation? A systematic review. Clin Exp Rheumatol 2006; 24(1): 93-102.
Safari S, Baratloo A, Elfil M, Negida A. Evidence Based Emergency Medicine Part 2: Positive and negative predictive values of diagnostic tests. Emerg (Tehran) 2015; 3(3): 87-8.
Nunnally JC, Bernstein IH. Psychometric Theory. 3rded. McGraw-Hill; 1994.
Addington-Hall JM, Bruera E, Higginson IJ, Payne S. Research methods in palliative care. New York: Oxford University Press; 2007.
Hearn J, Higginson IJ. Outcome measures in palliative care for advanced cancer patients: a review. J Public Health Med 1997; 19(2): 193-9.
Harding R, Selman L, Powell RA, Namisango E, Downing J, Merriman A, et al. Research into palliative care in sub- Saharan Africa. Lancet Oncol 2013; 14(4): e183-8.
Cherny N, Fallon M, Kaasa S, Portenoy RK, Currow DC. Oxford Textbook of Palliative Medicine. 5th ed. New York: Oxford University Press; 2015.