Table 2.

Statistics of each activity in our activity recognition algorithm.

Activity	TP	FP	TN	FN	TPR	TNR	PPV	NPV	ACC
Stand	2,323	54	11,998	14	0.994009	0.995519	0.977282	0.998834	0.995274
Walk	5,309	47	9,006	27	0.99494	0.994808	0.991225	0.997011	0.994857
Stand to sit	119	0	14,259	11	0.915385	1	1	0.999229	0.999236
Sit	300	26	14,045	18	0.943396	0.998152	0.920245	0.99872	0.996942
Sit to stand	112	1	14,268	8	0.933333	0.99993	0.99115	0.99944	0.999375
Turn	5,414	30	8,898	47	0.991394	0.99664	0.994489	0.994746	0.994649
Lie down	1	3	14,385	0	1	0.999791	0.25	1	0.999792
Bend	577	5	13,779	28	0.953719	0.999637	0.991409	0.997972	0.997707
Near-fall	58	5	14,311	15	0.794521	0.999651	0.920635	0.998953	0.99861
Fall	2	0	14,387	0	1	1	1	1	1