What accuracy rate is sometimes reported for devices worn on the trunk or chest compared to wrist devices?
Answer
Near 98%
Device placement significantly impacts the reliability and accuracy of automatic fall detection mechanisms due to variations in movement dynamics. Research indicates a measurable difference in performance based on where the sensor is situated on the body. Specifically, devices positioned closer to the body’s center of gravity, such as those worn on the trunk or chest, have demonstrated substantially higher reported accuracy rates, sometimes approaching 98%. This contrasts with wrist-worn devices, which are noted to be prone to mimicking errors because arm movements are naturally more varied and less indicative of a true fall event compared to torso movements.
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