Table 1.

Correlation between the mean and SD of RMS_S and RMS_P at each pain level.

NRS		(0, 4]	(0, 1]	(1, 2]	(2, 3]	(3, 4]
Mean	R	0.891	0.721	0.930	0.725	0.666
	P-value	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
SD	R	0.659	0.614	0.466	0.171	0.537
	P-value	< 0.001	< 0.001	0.013	0.335	0.001
NRS		(4, 10]	(4, 5]	(5, 6]	(6, 7]	(7, 8]	(8, 10]
Mean	R	0.550	0.454	0.525	0.570	0.633	0.555
	P-value	< 0.001	0.007	0.001	< 0.001	< 0.001	0.003
SD	R	0.519	0.303	0.340	0.065	0.402	0.193
	P-value	0.002	0.082	0.049	0.718	0.025	0.346