Table 3.

Results of the post-hoc comparison of clinical characteristics and results of HRV analysis between age groups (only p < 0.05), and the Jonckheere-Terpstra trend test for the trend analysis along age groups.

	1st vs. 2nd age group	1st vs. 3rd age group	2nd vs. 3rd age group	J-T trend test
Age	p < 0.05	p < 0.05	p < 0.05	< 0.00001
QRS		p < 0.05	p < 0.05	0.00836
Mean RR	p < 0.05	p < 0.05	p < 0.05	< 0.00001
SDNN		p < 0.05	p < 0.05	0.00340
ULF		p < 0.05	p < 0.05	0.00010
VLF		p < 0.05	p < 0.05	0.00090
LF		p < 0.05		0.01693
LF/HF		p < 0.05	p < 0.05	0.00073
SD2		p < 0.05	p < 0.05	0.00105
CL		p < 0.05		0.00721