Unverified80% confidenceTradeoffTime unknown
检测灵敏度越高，真实跌倒漏报率越低，但日常弯腰、坐下的误报也越多；给活动量大的老人建议选可调灵敏度或AI自学习步态的机型
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80%
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Long-term
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Unverified跌倒检测灵敏度与误报率成反比：灵敏度调高可减少漏检但拍手、放下手臂等动作易误触发SOS，给老人和子女造成困扰，需选可自定义灵敏度分级的机型83% similarUnverified跌倒检测灵敏度越高，误报（弯腰、坐下、放手快速）越频繁，频繁误报会导致老人主动关闭功能；选可分档调节灵敏度、且带30-60秒取消倒计时的产品最实用81% similarUnverified跌倒识别灵敏度与误报率不可兼得：灵敏度调高能捕捉轻微跌倒但误报增多导致老人烦躁弃戴；对活动量大的老人宜选中等灵敏度+人工复核（后台呼叫确认）机制79% similarUnverified灵敏度阈值越低漏报越少但误报越多，高灵敏度对帕金森、常弯腰劳作的老人会频繁误触发；应选可后台分级调节灵敏度的型号，而非固定单一阈值78% similarUnverified灵敏度越高越易捕捉真实跌倒，但误报（弯腰、拍手、放下手臂猛）也越多；误报频繁会导致老人厌烦取下不戴。选可调灵敏度且带取消倒计时的型号，比单纯追求高灵敏度更实用78% similar
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