Department of Nursing, College of Applied Medical Sciences, Majmaah University, Al Majmaah, 11952, Saudi Arabia.
Department of Pharmacy, College of Medicine and Health Sciences, Mizan-Tepi University (Mizan Campus), Mizan-Aman, Ethiopia.
BMC Public Health. 2019 Jan 9;19(1):41. doi: 10.1186/s12889-018-6310-z.
Stress is a common psychological condition usually associated with many psycho-physical disorders. Stress and its risk factors are frequently seen in Ethiopians including university students. In such circumstances, a valid measure to screen for stress in Ethiopians is necessary. Therefore, we assessed the psychometric properties of the Perceived Stress Scale (PSS) in Ethiopian university students.
A cross-sectional study with a simple random sampling method was performed on students of Mizan-Tepi University, Mizan-Aman, Ethiopia. The study presents a psychometric investigation on a sample of 387 students (age = 21.8 ± 3.8 years, and body mass index = 20.8 ± 3.2 kg/m) who completed PSS, Generalized anxiety disorder-7 scale (GAD-7), and a socio-demographics tool. McDonald's Omega (internal consistency), factor validity for ordinal data and convergent validity (Spearman's correlation) were assessed.
No ceiling/floor effect was seen for the total or factor scores of the PSS-10 and PSS-4. Two factor model of the PSS-10 was favored by fit indices with Comparative Fit Index> 0.95, Weighted root mean square residual<.05 and root mean square error of approximation<.08. McDonald's Omega was 0.78 and 0.68 for the PSS-10: Factor-1 and PSS-10: Factor-2, respectively. McDonald's Omega was 0.70 and 0.54 for the PSS-4: Factor-1 and PSS-4: Factor-2, respectively. There were moderate-strong correlations (r = 0.62-0.83) between PSS factors and respective items loading on them. PSS scores were correlated with GAD-7 (r = .27-.40, p < .01).
The psychometric measures support the validity of the PSS-10 in Ethiopian university students.
压力是一种常见的心理状况，通常与许多身心障碍有关。压力及其危险因素在埃塞俄比亚人包括大学生中经常出现。在这种情况下，有必要对埃塞俄比亚人进行压力筛查的有效措施。因此，我们评估了埃塞俄比亚大学生感知压力量表（PSS）的心理计量特性。
采用简单随机抽样法对埃塞俄比亚米赞-提皮大学的学生进行横断面研究。该研究对完成 PSS、广泛性焦虑症 7 项量表（GAD-7）和社会人口学工具的 387 名学生（年龄=21.8±3.8 岁，体重指数=20.8±3.2kg/m）进行了心理计量学调查。评估了 McDonald's Omega（内部一致性）、有序数据因子有效性和收敛有效性（Spearman 相关性）。
PSS-10 和 PSS-4 的总分或因子分数均未出现天花板/地板效应。PSS-10 的两因素模型通过拟合指数得到了支持，其中比较拟合指数>0.95，加权均方根残差<.05，近似均方根误差<.08。PSS-10：因素-1 和 PSS-10：因素-2 的 McDonald's Omega 分别为 0.78 和 0.68。PSS-4：因素-1 和 PSS-4：因素-2 的 McDonald's Omega 分别为 0.70 和 0.54。PSS 因子与各自的项目在因子上的负荷之间存在中度至高度相关（r=0.62-0.83）。PSS 评分与 GAD-7 呈中度相关（r=0.27-0.40，p<0.01）。
心理计量学测量结果支持 PSS-10 在埃塞俄比亚大学生中的有效性。
