Table 4.

Results of Spearman correlation (rho co-efficient) between the age of healthy children and studied HRV parameters from the 24-h ECG Holter recordings.

	Rho	P-value
Mean RR	0.55	< 0.0001
SDNN	0.33	0.0008
ULF	0.42	< 0.0001
VLF	0.35	0.0004
LF	0.30	0.0028
HF	−0.02	0.8758
LF/HF	0.38	0.0001
SD1	−0.04	0.6992
SD2	0.37	0.0002
CL	0.32	0.0012