Stress Detection Using Low Cost Heart Rate Sensors

Table 7

Statistical significance of the observed features ordered by value.

Feature	value
Mean RR	0.0001
Mean HR	0.0001
HF (ms^2)	0.0054
pNN50	0.0103
NN50	0.0128
LF (ms^2)	0.0128
RMSSD	0.0255
Poincaré plot, SD1	0.0268
HRV triangular index	0.0456
VLF (%)	0.0745
STD RR	0.1583
HF (%)	0.1583
Poincaré plot, SD2	0.2725
LF/HF	0.4565
VLF (ms^2)	0.4565
TINN	0.5967
Power (n.u.)-HF	0.7390
Power (n.u.)-LF	0.7539
STD HR	0.9687