Table 2.

Univariate statistical analysis results of heart rate and systolic/ diastolic blood pressure variability (HRV, BPV_sys, BPV_dia) in the time domain; and baroreflex sensitivity (BRS) analysis which discriminates between paranoid schizophrenia patients (SZ) and healthy subjects (CO).

index	p	CO mean ± s.d.	SZ mean ± s.d.
HRV
meanNN_BBI	**	904.2 ± 153.0	709.4 ± 104.7
sdNN_BBI	n.s.	52.0 ± 23.0	32.3 ± 23.4
rmssd_BBI	*	34.1 ± 18.6	16.9 ± 13.9
BPV
meanNN_sys	n.s.	134.9 ± 19.8	121.4 ± 15.4
sdNN_sys	n.s.	9.2 ± 3.0	10.0 ± 6.8
meanNN_dia	n.s.	69.8 ± 12.8	66.7 ± 12.2
sdNN_dia	n.s.	0.8 ± 0.9	2.5 ± 3.6
BRS
bslope	*	10.2 ± 5.8	4.6 ± 3.5
tslope	*	11.0 ± 5.5	4.8 ± 3.2

*p<0.01; ^**p<0.00045; n.s., not significant; BBI, beat-to-beat intervals; SYS, systolic blood pressure; DIA, diastolic blood pressure.