Psychometric properties of the Global Psychotrauma Screen (GPS) in the Brazilian general population.

IF 2.1 Q3 PSYCHIATRY

Trends in Psychiatry and Psychotherapy Pub Date : 2024-01-02 DOI:10.47626/2237-6089-2024-0913

Alice Einloft Brunnet, Bruno Messina Coimbra, Chris Hoeboer, Marcus Vinicius Bolívar Malachias, Christian Haag Kristensen, Miranda Olff

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Abstract

Objective: To evaluate the psychometric properties of the Brazilian version of the Global Psychotrauma Screen (GPS).

Methods: The scale was tested on two Internet-based samples: GPS-CCC (n = 657) and GPS-Brazil (n = 431). Exploratory factor analysis (EFA) was conducted on GPS-CCC. Confirmatory factor analysis (CFA), correlational analysis and sensitivity and specificity analysis were performed on the GPS-Brazil sample.

Results: EFA indicated a three-factor structure. Regarding CFA, models with one to three factors fitted the data well but the three-factor model proposed by Rossi et al. (2021) showed the best fit. Convergent validity was established between the GPS subscales and scales measuring symptoms of posttraumatic stress disorder (PTSD), complex PTSD, anxiety and depression. The cut-off point of 4 on the GPS PTSD scale was found to be optimal to identify probable PTSD. Optimal cut-off scores for probable complex PTSD and significant symptoms of anxiety and depression were also identified.

Conclusions: The results show that the Brazilian version of the GPS is a valid tool to screen transdiagnostic posttraumatic reactions.

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全球精神创伤筛查（GPS）在巴西普通人群中的心理测量特性。

目的：评价巴西版全球心理创伤筛查（GPS）的心理测量特性。方法：采用GPS-CCC （n = 657）和GPS-Brazil （n = 431）两个基于互联网的样本对量表进行测试。对GPS-CCC进行探索性因子分析（EFA）。对GPS-Brazil样本进行验证性因子分析（CFA）、相关性分析、敏感性和特异性分析。结果：EFA呈三因子结构。对于CFA， 1 - 3因素的模型可以很好地拟合数据，但Rossi et al.（2021）提出的3因素模型拟合效果最好。GPS量表与创伤后应激障碍（PTSD）、复杂PTSD、焦虑和抑郁症状量表之间存在趋同效度。GPS PTSD量表的分界点4被认为是识别可能的PTSD的最佳选择。还确定了可能的复杂创伤后应激障碍和显著焦虑和抑郁症状的最佳临界值。结论：结果表明，巴西版GPS是筛查创伤后反应的有效工具。

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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