Table 2.

Chi-squared test of the number of present CHEPs across the four heating ramps.

	Heating ramp (°C/s)	N2P2 waveform			N1 waveform
		Valid CHEPs [%]	X2	p	Valid CHEPs [%]	X2	p
Hand stimulation	150	86	0.14	0.987	52	3.70	0.296
	200	86			67
	250	86			48
	300	82			59
Foot stimulation	150	68	4.63	0.201	22	6.94	0.074
	200	86			37
	250	75			41
	300	93			41