Table 1 Baseline characteristics across groups [(\(\:\stackrel{-}{\text{x}}\) ± s) / M(P25, P75) / n (%)].

From: Association of diurnal blood pressure patterns with heart rate variability and retinopathy in patients with essential hypertension

Variable

Dipper (n = 57)

Non-dipper (n = 62)

Rverse-dipper(n = 62)

Statistic

P

Sex, male/female

[n (%)]

28 (49.1)/29 (50.9)

30 (48.4)/32 (51.6)

30 (48.4)/32 (51.6)

0.008a

0.996

Age (years)

55.00 (47.00, 62.00)

55.00 (48.25, 62.75)

60.50 (50.25, 64.75)

2.916

0.233

BMI (kg/m2)

23.66 (22.49, 25.48)

23.97 (22.86, 25.76)

24.75 (22.45, 27.36)

3.029

0.220

Hypertension

duration (years)

5.5 (3.00, 10.80)

5.5 (3.00, 14.80)

9.0 (4.00, 18.00)

2.644

0.267

Smoking

[n (%)]

1 (1.8)

5 (8.1)

3 (4.8)

2.506a

0.286

Alcohol use

[n (%)]

1 (1.8)

1 (1.6)

1 (1.6)

0.005a

0.998

CCB use

[n (%)]

14 (24.6)

16 (25.8)

15 (24.2)

0.047a

0.977

ACEI/ARB use [n (%)]

15 (26.3)

16 (25.8)

16 (25.8)

0.005a

0.997

Beta-blocker use [n (%)]

14 (24.6)

14 (22.6)

13 (21.0)

0.219a

0.896

Diuretic use

[n (%)]

14 (24.6)

15 (24.2)

15 (24.2)

0.003a

0.999

TC (mmol/L)

4.13 ± 0.85

4.26 ± 0.95

4.29 ± 0.85

0.503b

0.606

TG (mmol/L)

1.17 (0.89, 1.64)

1.31 (1.02, 1.58)

1.35 (1.08, 1.70)

2.890

0.235

LDL-C(mmol/L)

2.49 (2.21, 2.81)

2.57 (2.20, 2.84)

2.56 (2.32, 2.79)

1.832

0.400

HDL-C(mmol/L)

1.11 (0.99, 1.25)

1.15 (0.99, 1.30)

1.17 (1.08, 1.36)

2.656

0.265

  1. a χ2 statistic.
  2. bF statistic; other continuous-variable statistics are H values (Kruskal–Wallis).