在轻度认知障碍中评估纵向认知变化,使用估计的基于回归的标准化公式
Jasmin E Guevara1, Natalie E Kurniadi2, Kevin Duff3,4
1Department of Psychology, University of Utah, Salt Lake City, UT, USA.
Journal of Alzheimer's disease : JAD
|August 7, 2023
概括
轻度认知障碍 (MCI) 显示了随着时间的推移,即使在稳定的情况下,认知能力也会显著下降. 基于标准化的回归 (SRB) 的z-score有效量化了这种下降,有助于识别患病进展风险较高的个体.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 心理学 心理学 心理学
背景情况:
- 轻度认知障碍 (MCI) 是阿尔茨海默病的前体.
- 随着时间的推移,量化MCI患者的认知变化至关重要,但尚未得到充分研究.
- 基于标准化的回归 (SRB) 公式提供了一种方法,可以使用z-scores统计评估认知变化.
研究的目的:
- 使用SRBz-score量化MCI患者的认知变化.
- 为了比较MCI仍然存在的患者和进展为痴呆症的患者之间的认知衰退.
主要方法:
- 利用了在基线和大约1.5年后评估的283名MCI患者的数据.
- 在综合的神经心理学电池中,为每个参与者计算了SRBz-score.
- 在MCI-稳定和MCI-衰退组之间比较认知变化.
主要成果:
- 所有的认知测试都显示了随着时间的推移显著下降,特别是在学习和记忆.
- 在MCI-衰退组表现出比MCI-稳定组显著更大的认知衰退.
- 即使是MCI-Stable参与者也表现出显著的认知衰退,z分数表明与规范数据的显著偏差.
结论:
- 患有MCI意味着认知能力大幅下降,影响稳定患者和进展为痴呆症的患者.
- SRB z-score 为精确量化MCI认知衰退提供了一个有价值的工具.
- 这种量化可能有助于识别最容易患MCI进展的个体.
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