Bascour-Sandoval Claudio, Albayay Javier, Martínez-Molina Agustín, Opazo-Sepúlveda Arlett, Lacoste-Abarzúa Claudia, Bielefeldt-Astudillo Diego, Gajardo-Burgos Rubén, Galvéz-García Germán
Universidad de La Frontera (Chile), Universidad Autónoma de Chile (Chile).
Psicothema. 2022 May;34(2):323-331. doi: 10.7334/psicothema2021.21.
The factor structure of the Pain Catastrophizing Scale (PCS) has rarely been adequately analyzed (e.g., performing principal component analyses rather than factorial approximations). We aimed to evaluate the psychometric properties of the PCS through a variety of exploratory and confirmatory factorial approaches.
Three hundred ninety-four Chilean patients with musculoskeletal pain were included (age, M = 49.61, SD = 18.00; 71.57% women). Eight factorial models were proposed to analyze the structure of the data. In addition, validity evidence of the PCS based on relationships with other variables were analyzed considering pain intensity and kinesiophobia.
The results suggest a unidimensional structure. Models with more than one dimension exhibited undesirable factor loadings or inadequate indices of fit. Based on these results, a short version of the scale composed of 4 items is proposed (PCS-4). The PCS-4 scores demonstrated high levels of invariance between sex, chronicity, and education groups and also were associated with pain and kinesiophobia.
The results of the PCS-4 Spanish version showed evidence of reliability and validity for adequately measuring pain catastrophizing in Chileans who suffer from musculoskeletal pain. The PCS-4 is a short form that should be explored in future studies (e.g., in other Spanish-speaking populations).
疼痛灾难化量表（PCS）的因子结构很少得到充分分析（例如，进行主成分分析而非因子近似分析）。我们旨在通过多种探索性和验证性因子分析方法评估PCS的心理测量特性。
纳入394名患有肌肉骨骼疼痛的智利患者（年龄，M = 49.61，标准差 = 18.00；71.57%为女性）。提出了八个因子模型来分析数据结构。此外，基于与其他变量的关系，考虑疼痛强度和运动恐惧，分析了PCS的效度证据。
结果表明该量表具有单维结构。具有多个维度的模型表现出不理想的因子载荷或拟合指数不足。基于这些结果，提出了一个由4个项目组成的简短版本量表（PCS - 4）。PCS - 4得分在性别、病程和教育程度组之间表现出高度的不变性，并且还与疼痛和运动恐惧相关。
PCS - 4西班牙语版本的结果表明，该量表在充分测量患有肌肉骨骼疼痛的智利人的疼痛灾难化方面具有信度和效度证据。PCS - 4是一个简短版本，应在未来研究中进一步探索（例如，在其他讲西班牙语的人群中）。
