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认知能力查仪器的心理测量验证,使用Rasch分析对痴呆症患者进行验证

Shu-Chun Lee^1,2,3, Ya-Chen Lee⁴, En-Chi Chiu⁵

¹Department of Occupational Therapy, Taipei City Hospital Songde Branch, Taipei, Taiwan.

|August 11, 2023

概括

认知能力查仪器 (CASI) 是评估痴呆症认知功能的有效和可靠的工具. 拉什分析证实了它的单维性和有效性,用于捕捉痴呆症患者的认知能力.

科学领域:

老年学和认知神经科学
心理测量和临床评估

背景情况:

认知障碍是痴呆症的标志,需要准确的查工具.
认知能力查仪器 (CASI) 被广泛使用,但其心理测量特性需要严格验证,特别是单维性.
了解CASI在不同人群中的表现,例如痴呆症患者,对于临床实用性至关重要.

研究的目的:

在使用拉什分析的痴呆症人群中评估认知能力查仪器 (CASI) 的单维性.
为了估计这个群体内的CASI的Rasch人可靠性.
确认CASI作为痴呆症患者认知功能的查工具的有效性和可靠性.

主要方法:

使用确认因素分析 (CFA) 来评估CASI的一因素模型的合适性.
采用拉什分析来证实基于输入/输出平均平方和残余的主要成分分析的单维性.
计算了不同性别的Rasch人可靠性和差异性项目功能 (DIF).

主要成果:

卡西显示出非常适合一个一个因素模型 (CFI=0.99,TLI=0.99,RMSEA=0.015,SRMR=0.067).
单维性得到了可接受的内置/外置平均平方 (0.87-1.37/0.86-1.42) 和低余差 (12.3%) 的支持.
满意的拉什人可靠性 (0.58) 和没有显著的性别DIF被观察到.

结论:

CASI的46个项目有效地衡量了认知能力的单一,单维构造.
CASI是一个有效可靠的工具,用于查和评估痴呆症患者的整体认知功能.
研究结果支持CASI在临床环境中的实用性,用于评估痴呆症患者的认知缺陷.

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