A significant percentage of patients with RA and ANCA positivity were also diagnosed with AAV, with GPA being the most common subtype.

目前，虽然存在多种跌倒风险评估工具，但大多存在局限性。有的工具仅基于单一因素，难以全面反映老年人跌倒风险的复杂性；而且现有模型大多针对欧美人群，缺乏对中国老年人的针对性研究。因此，开发一个适合中国老年人的跌倒风险预测模型迫在眉睫。

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