| |
Total sample
|
Low variability
|
High variability
|
P
|
|---|
|
(n = 305)
|
(n = 148)
|
(n = 157)
|
|---|
|
Office SBP (mmHg)
|
143.0 ± 19.3
|
139.9 ± 17.5
|
146.0 ± 20.6
|
0.006
|
|
Office DBP (mmHg)
|
82.0 ± 10.6
|
81.4 ± 10.6
|
82.6 ± 10.7
|
0.355
|
|
24 h-ABPM SBP (mmHg)
|
130.6 ± 16.9
|
128.3 ± 14.7
|
132.9 ± 18.6
|
0.019
|
|
24 h-ABPM DBP (mmHg)
|
76.5 ± 9.3
|
75.7 ± 10.0
|
77.3 ± 8.6
|
0.144
|
|
Daytime 24-ABPM SBP (mmHg)
|
133.7 ± 15.9
|
130.5 ± 14.5
|
136.9 ± 16.7
|
<0.001
|
|
Daytime 24-ABPM DBP (mmHg)
|
78.9 ± 10.0
|
77.9 ± 10.4
|
79.9 ± 9.7
|
0.080
|
|
Nighttime 24-ABPM SBP (mmHg)
|
124.0 ± 18.3
|
122.6 ± 18.4
|
125.5 ± 18.2
|
0.169
|
|
Nighttime 24-ABPM DBP (mmHg)
|
69.6 ± 10.7
|
69.8 ± 11.2
|
69.5 ± 10.4
|
0.817
|
|
Time-rate index SBP (mmHg/min)
|
0.557 ± 0.116
|
0.459 ± 0.058
|
0.648 ± 0.075
|
<0.001
|
|
SD SBP (mmHg)
|
12.60 ± 4.40
|
11.37 ± 4.24
|
13.76 ± 4.25
|
<0.001
|
|
CV SBP (%)
|
9.97 ± 6.29
|
8.89 ± 3.16
|
10.99 ± 8.10
|
0.003
|
- The comparison groups were defined by the median of time-rate index of 24 h systolic BP and classified as low and high variability of time-rate index: values ≤ 0.54 or ≥ 0.55, respectively
-
BP blood pressure, ABPM ambulatory blood pressure monitoring, SBP systolic blood pressure, DBP diastolic blood pressure, SD SBP standard deviation of mean SBP, CV SBP coefficient of variability SBP
- Data are expressed as mean ± standard deviation. Comparisons (low variability vs. high variability) were tested by Student t test
