Table 5.

Pearson correlation between the RHI and other variables in patients with DFS

		RHI
RHI	Pearson Correlation	1
	Sig. (2-tailed)
	N	63
MMSE corrected for age	Pearson Correlation	− 0.047
	Sig. (2-tailed)	0.717
	N	63
RMSSD (ms)	Pearson Correlation	0.470
	Sig. (2-tailed)	0.0001
	N	63
SDANN5 MIN (ms)	Pearson Correlation	− 0.158
	Sig. (2-tailed)	0.216
	N	63
SD (ms)	Pearson Correlation	0.374
	Sig. (2-tailed)	0.002
	N	63
LF (%)	Pearson Correlation	0.022
	Sig. (2-tailed)	0.862
	N	63
HF (%)	Pearson Correlation	0.395
	Sig. (2-tailed)	0.001
	N	63
LF/HF	Pearson Correlation	0.280
	Sig. (2-tailed)	0.026
	N	63
Omentin-1 (ng/ml)	Pearson Correlation	0.067
	Sig. (2-tailed)	0.602
	N	63
Vaspine	Pearson Correlation	− 0.151
	Sig. (2-tailed)	0.237
	N	63

RHI, reactive hyperemia index; MMSE, Mini Mental State Examination; RMSSD, root mean square of the successive differences in 5 min; SDNN, standard deviation of the NN (R–R) intervals; SD, standard deviation; LF, low frequency; HF, high frequency; LF/HF, low frequency/high frequency