Brunnet Alice Einloft, Coimbra Bruno Messina, Hoeboer Chris, Malachias Marcus Vinicius Bolívar, Kristensen Christian Haag, Olff Miranda
Laboratory CLIPSYD, UFR SPSE, University Paris Nanterre, Nanterre, France.
Program for Research and Care on Violence and PTSD (PROVE), Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil. Department of Methodology & Statistics, Faculty of Social and Behavioural Sciences, Utrecht University, Utrecht, Netherlands.
Trends Psychiatry Psychother. 2024 Jan 2. doi: 10.47626/2237-6089-2024-0913.
To evaluate the psychometric properties of the Brazilian version of the Global Psychotrauma Screen (GPS).
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.
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.
The results show that the Brazilian version of the GPS is a valid tool to screen transdiagnostic posttraumatic reactions.
评估巴西版全球心理创伤筛查量表（GPS）的心理测量学特性。
该量表在两个基于互联网的样本上进行了测试：GPS - CCC（n = 657）和GPS - 巴西（n = 431）。对GPS - CCC进行探索性因素分析（EFA）。对GPS - 巴西样本进行验证性因素分析（CFA）、相关性分析以及敏感性和特异性分析。
探索性因素分析表明为三因素结构。关于验证性因素分析，一因素至三因素模型均能较好地拟合数据，但Rossi等人（2021年）提出的三因素模型拟合效果最佳。在GPS分量表与测量创伤后应激障碍（PTSD）、复杂性PTSD、焦虑和抑郁症状的量表之间建立了聚合效度。发现GPS PTSD量表上的临界值4最适合用于识别可能的PTSD。还确定了可能的复杂性PTSD以及焦虑和抑郁显著症状的最佳临界分数。
结果表明，巴西版GPS是筛查跨诊断创伤后反应的有效工具。
