The Canine Brief Pain Inventory (CBPI) is an owner-administered questionnaire, originally developed and validated in English, used to assess canine chronic pain in terms of severity and interference with daily life activities. The aim of the present study was to perform a preliminary validation of an Italian version of the CBPI. Translation was performed and the resulting questionnaire was administered to 45 native Italian speaking owners of dogs suffering from chronic pain due to radiographically confirmed osteoarthritis. Psychometric properties of the Italian CBPI including construct validity, convergent validity and reliability were evaluated. Construct validity was assessed by factor analysis and confirmed a two-factor model (i.e., pain severity and interference factors). The respective scores, that is, the pain severity score (PSS) and pain interference score (PIS), exhibited a substantial negative correlation with overall quality of life score. Pain severity and interference items showed a mean inter-item correlation of 0.90 and 0.80, respectively. For each question, communality ranged from 0.84 to 0.97, highlighting strong internal consistency and suggesting that PSS and PIS can be calculated by averaging the items contained within each factor. Cronbach's α was 0.97 and 0.96 for PSS and PIS, respectively. The present findings confirmed the main psychometric properties of the Italian version of the CBPI, providing clinicians and researchers with a useful metrology instrument to evaluate the severity of chronic pain and its interference with daily life activities in dogs with osteoarthritis owned by Italian speaking people. Further properties of the questionnaire need to be evaluated in future research and larger studies are warranted.

Canine Brief Pain Inventory (CBPI) 是主人管理的问卷，最初以英语开发和验证，用于评估犬慢性疼痛的严重程度和对日常生活活动的干扰。本研究的目的是对意大利语版本的 CBPI 进行初步验证。对 45 名因放射学证实的骨关节炎而患有慢性疼痛的狗的母语为意大利语的狗主人进行了翻译，并对其进行了问卷调查。评估了意大利 CBPI 的心理测量特性，包括结构效度、聚合效度和信度。通过因子分析评估结构有效性并确认双因子模型（即疼痛严重程度和干扰因素）。各自的分数，即 疼痛严重程度评分（PSS）和疼痛干扰评分（PIS）与整体生活质量评分呈显着负相关。疼痛严重程度和干扰项目的平均项目间相关性分别为 0.90 和 0.80。对于每个问题，公共性的范围从 0.84 到 0.97，突出了强大的内部一致性，并表明可以通过对每个因素中包含的项目求平均值来计算 PSS 和 PIS。PSS 和 PIS 的 Cronbach α 分别为 0.97 和 0.96。目前的研究结果证实了意大利版 CBPI 的主要心理测量特性，为临床医生和研究人员提供了一种有用的计量工具，以评估慢性疼痛的严重程度及其对意大利语人士所拥有的骨关节炎狗的日常生活活动的干扰。