Department of Neurosciences and Behavior, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil.
Int J Psychiatry Clin Pract. 2011 Nov;15(4):255-62. doi: 10.3109/13651501.2011.605955.
To analyze the psychometric properties of the Brazilian Portuguese version of the Beck Anxiety Inventory (BAI) in terms of its internal consistency, scores distribution, concurrent and discriminant validity, and factorial analysis in a sample of university students and social anxiety disorder (SAD) cases and non-cases.
A sample of Brazilian university students from the general population (N = 2314) and a sample of university students identified as cases (N = 88) and non-cases (N = 90) of SAD were assessed, using as a parameter the Structured Clinical Interview for the DSM-IV. The different instruments were completed individually in the presence of an experienced rater.
The BAI showed adequate internal consistency (0.88-0.92) and discriminant validity, with 0.74 sensitivity and 0.71 specificity for a cut-off score of 10. The factorial analysis suggested a three-factor solution to be the most adequate.
The version of the BAI studied is quite adequate to be used in the context of Brazilian university students, identifying the presence of anxiety indicators. However, its usefulness to screen for SAD seems limited.
分析贝克焦虑量表（BAI）巴西葡萄牙语版本的心理测量学特性，包括其在大学生样本和社交焦虑障碍（SAD）病例和非病例样本中的内部一致性、得分分布、同时效度和判别效度以及因子分析。
评估了来自普通人群的巴西大学生样本（N=2314）和被确定为 SAD 病例（N=88）和非病例（N=90）的大学生样本，采用 DSM-IV 结构临床访谈作为参数。不同的工具在有经验的评估者在场的情况下单独完成。
BAI 显示出良好的内部一致性（0.88-0.92）和判别效度，截断值为 10 时，灵敏度为 0.74，特异性为 0.71。因子分析表明，三因素解是最合适的。
研究中使用的 BAI 版本在巴西大学生群体中使用非常合适，能够识别焦虑指标的存在。然而，其用于筛查 SAD 的效果似乎有限。
