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本研究仍存在一些局限性:(1)研究仅比较了 RF Spatiotemporal gait characteristics associated with cognitive
和 GBDT 模型,虽然分类效果不差,但这远远不够,将 impairment:a multicenter cross-sectional study,the intercontinental
"Gait,Cognition & Decline" initiative[J]. Current Alzheimer
来应考虑更多的机器学习模型,比如 Lasso 回归、长短
Research,2018,15(3):273-282. DOI:10.1038/s41598-
期记忆网络和 XGBoost,以确定早期识别 aMCI 患者和
019-53656-7.
AD 患者的最佳措施;(2)本研究所纳入 AD 患者的样 [9]DE OLIVEIRA SILVA F,FERREIRA J V,PLÁCIDO J,et al. Gait
本量少,可能会降低本研究的统计有效性,并影响机器 analysis with videogrammetry can differentiate healthy elderly,mild
学习的准确性;(3)本研究仅采集了步态周期、运动 cognitive impairment,and Alzheimer's disease:a cross-sectional
学参数和时间 - 空间参数 3 类,步态参数涉及的领域不 study[J]. Experimental Gerontology,2020,131:110816. DOI:
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S0007125000118082.
综上,本研究发现:(1)使用步态参数评估 HC [11]DUBOIS B,FELDMAN H H,JACOVA C,et al. Research criteria
和 aMCI 具有争议,未来的研究应该进一步探索该研究 for the diagnosis of Alzheimer's disease:revising the NINCDS-
领域的准确性;(2)可穿戴设备采集的步态参数可以 ADRDA criteria[J]. Lancet Neurology,2007,6(8):734-
作为识别 HC 和 AD 的有用临床工具;(3)步幅、足 746. DOI:10.1016/S1474-4422(07)70178-3.
[12]BRAEKHUS A,LAAKE K,ENGEDAL K. The Mini-Mental State
趾离地角度和足跟着地角度是识别 aMCI 患者和 AD 患
Examination:identifying the most efficient variables for detecting
者的重要步态标志物,未来对预防或延缓 AD 的发生有
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重要的临床应用价值。 Geriatrics Society,1992,40(11):1139-1145. DOI:10.1111/
作者贡献:陶帅负责资金提供、调查开展、概念提 j.1532-5415.1992.tb01804.x.
出;韩星负责形式分析、方法学、软件、原稿创作;孔 [13]PINTO T C C,MACHADO L,BULGACOV T M,et al. Is the
丽文负责项目管理、监督、验证;汪祖民负责可视化、 Montreal Cognitive Assessment(MoCA) screening superior to the
审查和写作;谢海群负责数据管理、资源提供。 Mini-Mental State Examination(MMSE) in the detection of mild
cognitive impairment(MCI) and Alzheimer's Disease(AD) in
本文无利益冲突。
the elderly[J]. International Psychogeriatrics,2019,31(4):
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