Table III.

Area under the curve of the receiver operating characteristics

Parameter	Area	Std. error	p-value	Asymptotic 95% CI
				Lower bound	Upper bound
Pulse rate (standing)	0.906	0.032	˂0.001	0.844	0.968
SSR latency (msec)	0.797	0.045	˂0.001	0.709	0.884
Pulse rate (supine)	0.773	0.047	˂0.001	0.681	0.865
SSR amplitude (µV)	0.736	0.054	˂0.001	0.631	0.842
pNN 50%	0.719	0.051	˂0.001	0.618	0.82
Systolic BP supine (mmHg)	0.638	0.06	0.025	0.522	0.755

SSR: sympathetic skin response

BP: blood pressure

CI: Confidence interval

PNN50: number of pairs of adjacent NN intervals differing by more than 50 msec in the entire recording divided by the total number of all NN intervals