Table 6.

Accuracy comparison with prior work.

Activity	Lu et al [10]	Reddy et al [11]	Kwapisz et al [12]	Current study
Sitting (still)	97.7%	95.6%	95%	100%
Walking	96.6%	96.8%	91.7%	94.1% (slow), 92% (normal), 90.1% (brisk)
Running or jogging	98%	91.0%	98.3%	91.7%
Upstairs	NDa	ND	61.5%	69.8% (normal), 70.4% (brisk)
Downstairs	ND	ND	44.3%	79.4% (normal), 52.3% (brisk)

^a Not done.