Table 2 Autonomic nervous system activity characteristics at baseline of the study population according to the dipper/non-dipper status, using two measurements (means adjusted for hypertensive status at baseline)

From: Autonomic nervous system activity is independently associated with the risk of shift in the non-dipper blood pressure pattern

 

D1/D2

D1/ND2

ND1/D2

ND1/ND2

(Fisher's test)

Total

 

Mean

s.d.

Mean

s.d.

Mean

s.d.

Mean

s.d.

P

Mean

s.d.

In 24-h HF

4.62

0.81

4.39

0.79

4.66

0.95

4.72

0.92

0.03

4.60

0.84

In 24-h LF

5.40

0.63

5.18

0.71

5.40

0.67

5.27

0.78

0.02

5.31

0.67

In 24-h VLF

6.39

0.57

6.18

0.65

6.43

0.55

6.32

0.66

0.005

6.33

0.60

In 24-h ULF

7.77

0.60

7.69

0.69

7.76

0.60

7.79

0.61

0.65

7.77

0.62

In 24-h Ptot

8.17

0.53

8.05

0.63

8.17

0.52

8.16

0.59

0.24

8.14

0.56

In night LF/HF

0.98

0.63

0.98

0.71

0.98

0.71

0.84

0.63

0.36

0.95

0.66

In 24-h HR

6.73

0.11

6.71

0.11

6.75

0.11

6.74

0.12

0.07

6.73

0.11

  1. Abbreviations: D1, ND1, dipper, non-dipper at baseline; D2, ND2, dipper, non-dipper after 2 years; HF, high frequency; LF, low frequency; Ptot, total frequency power; ULF, ultra-low frequency; VLF, very low frequency.
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