Universidad César Vallejo, Lima, Peru.
Universidad Femenina del Sagrado Corazón, Lima, Peru.
J Prim Care Community Health. 2023 Jan-Dec;14:21501319231197589. doi: 10.1177/21501319231197589.
The stigma associated with human immunodeficiency virus (HIV) can lead to prejudice and discrimination against people who have been infected by this virus, consequently, it is important to have a validated tool to measure this phenomenon. However, there is only 1 national precedent that has validated the scores of this instrument in its 21-item version. Therefore, this study examined the bifactor structural equation method (SEM) and multidimensional item response theory (MIRT) structure of a 12-item human immunodeficiency virus stigma scale in Peruvian adults.
We evaluated 342 patients (57.6% female and 42.45% male) diagnosed with HIV receiving highly active antiretroviral therapy (HAART) from a hospital located in East Lima, aged 18 to 45 years ( = 31.4, SD = 9.79). A SEM was used to test 2 measurement models, a 4-factor correlated oblique model and a bifactor model due to high interfactor relationships.
Acceptable fit indices were identified for the oblique model (χ/df = 1.26, SRMR = 0.044, RMSEA [90% CI] = 0.028 [0.000-0.047], CFI = 0.996, TLI = 0.994). In the same way, similar results were evident for the bifactor model (χ/df = 1.14, SRMR = 0.039, RMSEA [90% CI] = 0.020 [0.000-0.044], CFI = 0.998, TLI = 0.997), however, in the latter it showed a greater explanation for the unidimensional model ( = 0.87, PUC = 0.82, LCA = 0.70), which was also evidenced by the bifactor MIRT analysis.
It is concluded that the 12-item HIV Stigma Scale meets the psychometric properties of internal structure and unifactorial reliability.
与人类免疫缺陷病毒（HIV）相关的耻辱感可能导致人们对感染这种病毒的人产生偏见和歧视，因此，拥有一个经过验证的工具来衡量这种现象是很重要的。然而，只有一个全国性的先例已经验证了这个 21 项版本的工具的分数。因此，本研究在秘鲁成年人中检查了一个 12 项人类免疫缺陷病毒耻辱感量表的双因素结构方程模型（SEM）和多维项目反应理论（MIRT）结构。
我们评估了 342 名接受高效抗逆转录病毒治疗（HAART）的 HIV 患者（57.6%为女性，42.45%为男性），这些患者来自利马东部的一家医院，年龄在 18 至 45 岁之间（=31.4，SD=9.79）。使用 SEM 测试了 2 个测量模型，一个是 4 个因子相关的斜交模型，另一个是由于高因子间关系的双因素模型。
斜交模型的可接受拟合指数被确定（χ/df=1.26，SRMR=0.044，RMSEA[90% CI]=0.028[0.000-0.047]，CFI=0.996，TLI=0.994）。同样，双因素模型也有类似的结果（χ/df=1.14，SRMR=0.039，RMSEA[90% CI]=0.020[0.000-0.044]，CFI=0.998，TLI=0.997），然而，后者对单维模型有更好的解释（=0.87，PUC=0.82，LCA=0.70），这也可以从双因素 MIRT 分析中得到证实。
12 项 HIV 耻辱感量表的内部结构和单因素可靠性符合心理测量学特性。
