Véliz García Óscar, Calderón Carvajal Carlos, Beyle Sandoval Christian
Escuela de Psicología, Facultad de Humanidades, Universidad Católica del Norte, Antofagasta, Chile.
Departamento de Psicología, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Temuco, Chile.
Rev Med Chil. 2020 Sep;148(9):1279-1288. doi: 10.4067/S0034-98872020000901279.
The Addenbrooke's Cognitive Examination III (ACE-III) is widely used for evaluation of dementia.
To assess the psychometric properties of ACE-III, analyzing its factor structure, its reliability (from an Item Response Theory [TRI] model) and its diagnostic usefulness.
We studied 1101 older people without cognitive impairment and 63 currently having a diagnosis and receiving treatment for dementia.
The presence of two factors for the Attention subscale (Orientation and Attention, separately) was suggested. The factorial analysis showed adequate adjustment in all the subscales, except for the new Attention subscale. In the TRI analysis, the Attention subscale presented a greater number of items with lack of fit compared to the other subscales. Using a proposed threshold of 66 points or less to identify cognitive impairment related to dementia, a sensitivity of 0.97 and specificity of 0.81 was obtained.
ACE-III is a valid, reliable, and useful measure for the clinical detection of dementia. The combined use of Orientation and Memory subscales is proposed as an alternative and time-saving ACE-III indicator.
剑桥认知功能量表第三版（ACE-III）被广泛用于痴呆症评估。
评估ACE-III的心理测量特性，分析其因子结构、可靠性（从项目反应理论[IRT]模型）及其诊断效用。
我们研究了1101名无认知障碍的老年人和63名目前已被诊断为痴呆症并正在接受治疗的患者。
提示注意力分量表存在两个因子（分别为定向和注意力）。因子分析表明，除新的注意力分量表外，所有分量表的拟合度都较好。在IRT分析中，与其他分量表相比，注意力分量表存在较多拟合不佳的项目。使用建议的66分及以下的阈值来识别与痴呆症相关的认知障碍，灵敏度为0.97，特异度为0.81。
ACE-III是一种用于临床检测痴呆症的有效、可靠且有用的测量工具。建议联合使用定向和记忆分量表作为一种替代且省时的ACE-III指标。
