Mwangala Patrick N, Guni Joseph Newton, Mwangi Paul, Makandi Millicent, Kerubo Anita, Odhiambo Rachel, Abubakar Amina
Institute for Human Development, Aga Khan University, Nairobi, Kenya.
Centre for Geographic Medicine Research Coast, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
Front Psychiatry. 2024 Sep 3;15:1338311. doi: 10.3389/fpsyt.2024.1338311. eCollection 2024.
The psychometric properties of the Primary Care PTSD Screen for DSM-5 (PC-PTSD-5) are undocumented in Kenya and sub-Saharan Africa (SSA) at large. This study aimed to evaluate the psychometric properties of the Swahili version of the tool, S-PC-PTSD-5, in a community sample of adults 18 years and older drawn from Nairobi, Mombasa and Kwale counties in Kenya.
Analysis of cross-sectional data from 1431 adults from the community was conducted, examining the reliability, factorial structure, measurement invariance, and convergent and divergent validity of the interviewer-administered S-PC-PTSD-5.
Out of 1431 adults who completed the S-PC-PTSD-5, 666 (46.5%) reported experiencing at least one traumatic event. Internal consistency of the S-PC-PTSD-5 was good overall, with alpha and omega values above 0.7. Confirmatory factor analysis (CFA) results indicated a one-factor structure of the S-PC-PTSD-5 for the overall sample. Multigroup CFA also demonstrated factorial invariance for sex for the one-factor structure of S-PC-PTSD-5. Scores for S-PC-PTSD-5 significantly correlated (positively) with those of generalized anxiety disorder (GAD7) and depressive symptoms (PHQ9), indicating convergent validity. S-PC-PTSD-5 scores also significantly correlated (negatively) with the WHO-5 wellbeing index, supporting divergent validity.
The S-PC-PTSD-5 is a reliable and valid unidimensional measure. It appears to be a valuable screening measure for probable PTSD in both urban and rural community settings in Kenya. Nonetheless, to confidently identify those who may need treatment/additional support, further research on the reliability and validity of S-PC-PTSD-5 is required, especially its diagnostic accuracy at different cutoff scores.
《精神障碍诊断与统计手册》第5版（DSM - 5）的初级保健创伤后应激障碍筛查量表（PC - PTSD - 5）在肯尼亚以及整个撒哈拉以南非洲（SSA）的心理测量特性尚无文献记载。本研究旨在评估该工具的斯瓦希里语版本S - PC - PTSD - 5在肯尼亚内罗毕、蒙巴萨和夸莱县抽取的18岁及以上成年人社区样本中的心理测量特性。
对来自该社区的1431名成年人的横断面数据进行分析，考察由访谈者实施的S - PC - PTSD - 5的信度、因子结构、测量不变性以及聚合效度和区分效度。
在完成S - PC - PTSD - 5的1431名成年人中，666人（46.5%）报告经历过至少一次创伤事件。S - PC - PTSD - 5的总体内部一致性良好，α系数和ω系数值均高于0.7。验证性因子分析（CFA）结果表明，总体样本的S - PC - PTSD - 5呈单因素结构。多组CFA还表明，S - PC - PTSD - 5单因素结构在性别上具有因子不变性。S - PC - PTSD - 5得分与广泛性焦虑障碍（GAD7）得分和抑郁症状（PHQ9）得分显著正相关，表明具有聚合效度。S - PC - PTSD - 5得分与世界卫生组织5分幸福指数也显著负相关，支持区分效度。
S - PC - PTSD - 5是一种可靠且有效的单维度测量工具。它似乎是肯尼亚城乡社区环境中可能患有创伤后应激障碍的一种有价值的筛查工具。尽管如此，为了自信地识别那些可能需要治疗/额外支持的人，需要对S - PC - PTSD - 5的信度和效度进行进一步研究，特别是其在不同临界分数下的诊断准确性。
