Unverified85% confidenceTradeoffTime unknown
腕式便携但对测量姿势极敏感（手腕需与心脏同高），越便携越易因姿势误差导致读数不准，追求准确性时便携性要让步于上臂式
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85%
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Long-term
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Unverified腕式便携但极其依赖姿势——手腕必须与心脏保持同一高度，测量时若手臂悬空或过低，误差显著；给不熟悉操作规范的老人用腕式，读数常年不准88% similarUnverified精准度与便携性的权衡：腕式体积小便于出差携带且价格低，但需保持腕部与心脏齐平否则误差大；上臂式精度稳定但体积大、需坐姿测量，家用监测应选上臂式而非追求便携82% similarUnverified腕式便携性好但精度受体位影响大，需严格保持腕部与心脏同高才准；家用固定监测场景不应为便携牺牲精度选腕式80% similarUnverified便携性与准确性的权衡：手指/手腕式超声仪体积小、可自测，但受软组织厚度和放置角度影响大；足跟式需坐姿+浸水或耦合剂、体积较大操作稍繁琐，但结果稳定性明显更高。追求趋势可靠性选足跟式，追求随手测选手指式79% similarUnverified腰夹式/口袋式计步器因贴近身体重心，慢走和上下楼计步比腕带式更准；腕带式在手臂大幅摆动或推购物车时容易漏计或误计79% similar
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