Factorial validation of the PC-PTSD-5 in the adult Quebec population.

IF 1.3 4区医学 Q4 NEUROSCIENCES

Encephale-Revue De Psychiatrie Clinique Biologique et Therapeutique Pub Date : 2026-10-16 DOI:10.1016/j.encep.2026.08.014

Jacques D Marleau, Mélissa Généreux

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引用次数: 0

Abstract

Introduction: The objective of this study was to evaluate the factor structure and psychometric properties of the PC-PTSD-5 scale applied to the COVID-19 crisis among Quebec adults. The assessment of factor structure has rarely been conducted in the general population.

Methodology: Two online surveys were conducted in February and May-June 2021 among adults living in Quebec. Exploratory and confirmatory factor analyses, together with item response theory analyses, were conducted to evaluate the unidimensionality of the PC-PTSD-5.

Results: The factor analysis results supported the presence of a unidimensional structure. Configural and scalar invariance were also supported across gender, age, and language most spoken at home. In addition, the item response theory analyses provided further evidence of the scale's psychometric robustness at the item level. The convergent and divergent validity results also supported the criterion-related validity of the measure.

Discussion and conclusion: The results confirm the existence of a unidimensional structure for the PC-PTSD-5 scale items related to the COVID-19 crisis. Therefore, using the total score of the five items is appropriate. Given its excellent psychometric properties and brevity, its use is recommended among the adult population of Quebec.

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魁北克成年人群PC-PTSD-5的析因验证。

前言：本研究的目的是评估应用于魁北克成人COVID-19危机的PC-PTSD-5量表的因素结构和心理测量特性。在普通人群中进行因子结构评估的研究很少。研究方法：于2021年2月和5月至6月对居住在魁北克的成年人进行了两次在线调查。采用探索性和验证性因素分析，结合项目反应理论分析，对PC-PTSD-5的单维性进行评价。结果：因子分析结果支持单维结构的存在。配置和标量不变性也支持跨性别、年龄和家庭常用语言。此外，项目反应理论分析进一步证明了量表在项目水平上的心理测量稳健性。趋同效度和发散效度结果也支持量表的标度相关效度。讨论与结论：结果证实了与COVID-19危机相关的PC-PTSD-5量表项目存在单维结构。因此，使用五个项目的总分是合适的。鉴于其出色的心理测量特性和简洁，它被推荐在魁北克的成年人中使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Encephale-Revue De Psychiatrie Clinique Biologique et Therapeutique 医学-精神病学

CiteScore

4.60

自引率

7.40%

发文量

162

审稿时长

6-12 weeks

期刊介绍： Une revue française de renommée internationale. - Un comite de rédaction représentant tous les aspects de la prise en charge psychiatrique du patient. - Une sélection rigoureuse d''articles faisant l''objet de plusieurs expertises. - Des travaux d''auteurs et de chercheurs de renommée internationale. - Des indexations dans les grandes bases de données (Current Contents, Excerpta Medica, etc.). - Un facteur d''impact qui témoigne de la grande notoriété de la revue. La tribune des publications originales de haut niveau. - Une très grande diversité des sujets traités, rigoureusement sélectionnés à travers des sommaires dynamiques : - des éditoriaux de médecins référents, - une revue de presse sur les actualités internationales, - des articles originaux pour approfondir vos connaissances, - des mises au point et des cas cliniques pour engager votre réflexion sur les indications et choix possibles au travers de mises en situation clinique, - des dossiers thématiques pour faire le tour d''une question. - L''actualité de l''AFPB : L''Encéphale publie régulièrement des comptes rendus de l''Association française de psychiatrie clinique.