Table 2: Brachial and central blood pressure from 24h ABPM in hypertensive patients and healthy controls.

Brachial BP CASP
Controls (n=56) Patients (n=75) p
Brachial
Controls (n=49) Patients (n=64) p
CASP
24h systolic BP, mmHg 120 (8) 139 (11) <0.0001 109 (16)** 124 (14)** <0.0001
24h diastolic BP, mmHg 73 (4) 82 (6) <0.0001
24h heart rate, beat/min 67 (9) 69 (10) 0.19
Daytime systolic BP, mmHg 124 (9) 141 (11) <0.0001 113 (15)** 127 (15)** <0.0001
Daytime diastolic BP, mmHg 75 (5) 84 (7) <0.0001
Night-time systolic BP, mmHg 103 (8) 123 (15) <0.0001 102 (15) 117 (15) * <0.0001
Night-time diastolic BP, mmHg 63 (5) 73 (9) <0.0001
Relative nocturnal SBP decrease, % 17 (7) 13 (7) 0.002 10 (5) ** 7 (6) ** 0.019
Absolute nocturnal SBP decrease, mmHg 21 (9) 18 (10) 0.09 11(6)** 10 (8)** 0.24
Non-dippers, % (n) a 18 (10) 32 (24) 0.07 50 (26)* 69 (46)** 0.032

Abbreviations: ABPM: Ambulatory Blood Pressure Monitoring, BP: Blood Pressure, CASP: Central Aortic Systolic Pressure, SBP: Systolic Blood Pressure. Data are presented as mean (SD) unless otherwise stated. a Percentage (number) of subjects with nocturnal systolic BP decrease < 10% of daytime. * Compared to brachial BP within the same group, p < 0.05. ** Compared to brachial BP within the same group, p <0.0001. Statistics were performed using unpaired t-test or chi-square test between groups, and paired t-test or McNemars test within groups.