Perceived vulnerability to disease is characterized by the extent to which individuals perceive themselves to be susceptible to contracting infectious diseases, as well as by the emotional discomfort that results from assessing the risk of getting contaminated by pathogens. The PVD self-report scale, which measures this construct, is widely used internationally. However, it has not yet been adapted for Brazil. To address this gap, we adapted and validated the PVD scale for the Brazilian context (PVD-br) in four studies. Study 1 (N = 39) addressed translation, expert validation, and assessment of the comprehensibility of the scale’s items. Study 2 (N = 200) showed that the items were organized into two correlated factors and tested the scale’s items quality using the Item Response Theory. Study 3 (N = 201) confirmed the bifactorial structure and examined the invariance of PVD-br for men and women, while Study 4 analyzed the convergent (N = 432) and discriminant (N = 181) validity of the instrument. Results indicate strong evidence of content, factorial, and criterion validity.

对疾病的感知脆弱性的特征是个人认为自己容易感染传染病的程度，以及评估被病原体污染的风险而产生的情绪不适。 PVD 自我报告量表衡量了这一概念，在国际上得到广泛使用。然而，它尚未针对巴西进行调整。为了弥补这一差距，我们在四项研究中针对巴西情况调整并验证了 PVD ​​量表 (PVD-br)。研究 1 ( N = 39) 涉及翻译、专家验证以及量表项目可理解性的评估。研究 2（ N = 200）表明，项目被组织成两个相关因素，并使用项目反应理论测试了量表的项目质量。研究 3 ( N = 201) 证实了双因素结构并检查了男性和女性 PVD-br 的不变性，而研究 4 分析了该工具的收敛效度 ( N = 432) 和判别效度 ( N = 181)。结果表明内容、因子和标准有效性的有力证据。