Manzar Md Dilshad, Alghadir Ahmad H, Anwer Shahnawaz, Alqahtani Mazen, Salahuddin Mohammed, Addo Habtamu Acho, Jifar Wakuma Wakene, Alasmee Nofaa Ali
Department of Nursing, College of Applied Medical Sciences, Majmaah University, Majmaah, 11952, Saudi Arabia.
Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
Neuropsychiatr Dis Treat. 2021 Mar 22;17:893-903. doi: 10.2147/NDT.S295912. eCollection 2021.
Few studies have investigated the psychometric validation of the General Anxiety Disorders-7 Scale (GAD-7) using appropriate data assumptions. This study examined the reliability, factorial validity, divergent validity, and item analysis of the GAD-7 using categorical data methods in a sample of Ethiopian young adults.
A sample of 270 students in the age group (18-20 years) was recruited during February-May of 2017 in this cross-sectional study using simple random sampling. The participants completed a tool for socio-demographic details, the GAD-7, and the Perceived Stress Scale-10 (PSS-10).
The cumulative variance rule (> 40%), the scree test, Kaiser's criteria (Eigenvalues > 1), and the parallel analysis found a 1-factor model for the GAD-7 (factor loadings, 0.38 to 0.63). Fit indices suggested a 1-factor model: the tests applied included the weighted root mean square residual (0.030), comparative fit index (1.000), the goodness of fit index (1.00), root mean square error of approximation (0.037) and the non-normed fit index (1.00). McDonald's Omega (0.772) implied that the scores had adequate internal consistency. Divergent validity was supported by significant but weak correlations that were found between the GAD-7 and PSS-10 scores (r = 0.11 to 0.25, <0.05).
The psychometric validity of the GAD-7 in Ethiopian university attending young adults was supported by the categorical data method.
很少有研究使用适当的数据假设来调查广泛性焦虑障碍-7量表（GAD-7）的心理测量学效度。本研究采用分类数据方法，在埃塞俄比亚年轻成年人样本中检验了GAD-7的信度、因子效度、区分效度和项目分析。
在2017年2月至5月期间，采用简单随机抽样的方法，对270名年龄在18至20岁之间的学生进行了横断面研究。参与者完成了一份社会人口学详细信息工具、GAD-7和感知压力量表-10（PSS-10）。
累积方差规则（>40%）、碎石图检验、凯泽准则（特征值>1）和平行分析发现GAD-7为单因素模型（因子载荷，0.38至0.63）。拟合指数表明为单因素模型：应用的检验包括加权均方根残差（0.030）、比较拟合指数（1.000）、拟合优度指数（1.00）、近似均方根误差（0.037）和非标准化拟合指数（1.00）。麦克唐纳欧米伽系数（0.772）表明得分具有足够的内部一致性。GAD-7与PSS-10得分之间存在显著但较弱的相关性（r = 0.11至0.25，<0.05），支持了区分效度。
分类数据方法支持了GAD-7在埃塞俄比亚大学年轻成年人中的心理测量学效度。
