[KongchangAI]
Unverified90% confidenceFactTime unknown

家用体脂秤采用单频生物电阻抗法(BIA),体脂率测量误差普遍在±3%~5%,四电极(仅脚踏)机型无法测量上半身,实际参考价值有限,应关注变化趋势而非绝对值

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90%
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Long-term
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