Table 1 Demographic characteristics of the study population.

From: Role of the autonomic nervous system in young, middle-aged, and older individuals with essential hypertension and sleep-related changes in neurocardiac regulation

Demographics

Individuals without hypertension

Patients with hypertension

Younger group

Middle-aged group

Older group

Younger group

Middle-aged group

Older group

Number

n = 14

n = 13

n = 17

n = 5

n = 16

n = 32

Age (year)

32.1 ± 2.1

50.3 ± 5.3

68.5 ± 4.2

33.8 ± 3.6

51.2 ± 6.2

70.1 ± 6.5

BMI (kg/m2)

22.5 ± 2.1

23.4 ± 1.0

23.0 ± 2.6

26.6 ± 4.4

26.3 ± 3.3*

24.1 ± 2.5

SBP (mmHg)

121.6 ± 8.1

126.9 ± 13.1

131.0 ± 14.7

143.8 ± 11.7*

136.1 ± 13.6

135.7 ± 15.3

DBP (mmHg)

72.6 ± 8.0

73.3 ± 3.2

78.8 ± 12.1

94.8 ± 12.7*

87.4 ± 12.4*

83.2 ± 8.4

  1. Mean ± SD.
  2. BMI body mass index, SBP systolic blood pressure, DBP diastolic blood pressure.
  3. *p < 0.05 vs. control group, independent t test.
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