Controls (n = 38)

IDC patients (n = 51)

p

VPC count

1448 ± 2929

2638 ± 5258

ns

SVPC count

54 ± 221

633 ± 2504

<0.01

Mean RRI (ms)

916 ± 150

877 ± 117

ns

SDNN (ms)

153 ± 44

124 ± 39

<0.01

RMSSD (ms)

41 ± 29

30 ± 19

<0.01

PNN50 (%)

12.6 ± 10.5

7.2 ± 8.0

<0.01

FD

1.65 ± 0.07

1.59 ± 0.09

<0.01

SD 1 (Poincare plot)

29 ± 20

21 ± 13

<0.01

SD 2 (Poincare plot)

214 ± 61

174 ± 54

<0.01

a 1

1.03 ± 0.02

1.03 ± 0.01

ns

a 2

0.98 ± 0.01

0.98 ± 0.02

ns

Total power (ln)

9.3 ± 0.6

9.1 ± 0.7

ns

ULF power (ln)

8.9 ± 0.6

8.6 ± 0.7

ns

VLF power (ln)

8.0 ± 0.6

7.8 ± 0.7

ns

LF power (ln)

6.5 ± 0.9

6.1 ± 1.2

<0.05

HF power (ln)

5.4 ± 1.0

4.9 ± 1.2

<0.05

LF/HF ratio

3.6 ± 2.2

3.7 ± 2.2

ns

TO (%)

−3.2 ± 4.6

−3.4 ± 4.4

ns

TS (ms/RRI)

22.6 ± 17.6

17.7 ± 12.1

ns