图形摘要：跌倒风险在同时存在认知障碍和衰弱的老年人中最高。单独的衰弱在认知正常的个体中影响很小，显示出认知与身体脆弱性之间的协同交互作用。
数据可用性声明：支持本研究结果的数据可向通讯作者索取。由于隐私或伦理限制，这些数据不公开。
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