Reference Intervals of Central Aortic Blood Pressure and Augmentation Index Assessed with an Oscillometric Device in Healthy Children, Adolescents, and Young Adults from Argentina
Table 3
Sex-related cSBP and cAIx comparison: analysis of covariance (ANCOVA) adjusting by age, heart rate, and/or anthropometric variables (cofactors).
(a)
cSBP (mMHg): before adjustment
cSBP (mmHg): after adjustment by covariates
Covariates appearing in the model are evaluated at the following values
Levene’s test
Homogeneity of regression slopes test
Adjusted
MV
SD
MV
SE
95% CI lower bound
95% CI upper bound
Age (years)
Body height (cm)
Body weight (Kg)
Yugulo-Symphysis distance (cm)
Heart rate (b.p.m.)
Model 1
Male
99.3517
8.39824
<0.001
99.241
.337
98.579
99.903
0.090
15.35
------
------
------
------
0.773
0.002
0.070
Female
98.2448
8.35555
98.383
.377
97.643
99.122
Model 2
Male
99.3517
8.39824
<0.001
98.813
.350
98.125
99.500
0.852
15.35
162.67
57.00
47.48
------
0.797
0.011
0.113
Female
98.2448
8.35555
98.917
.397
98.139
99.696
Model 3
Male
99.3517
8.39824
<0.001
99.616
.337
98.954
100.278
0.724
15.35
------
------
------
68.43
0.724
0.001
0.101
Female
98.2448
8.35555
97.916
.378
97.173
98.658
Model 4
Male
99.3517
8.39824
<0.001
99.061
.345
98.385
99.737
0.415
15.35
162.67
57.00
47.48
68.43
0.859
0.005
0.151
Female
98.2448
8.35555
98.607
.391
97.841
99.374
(b)
cAIx: before adjustment
cAIx: after adjustment by covariates
Covariates appearing in the model are evaluated at the following values
Levene’s test
Homogeneity of regression slopes test
Adjusted
MV
SD
MV
SE
95% CI lower bound
95% CI upper bound
Age (years)
Body Height (cm)
Body weight (Kg)
Yugulo-Symphysis distance (cm)
Heart rate (b.p.m.)
Model 1
Male
6.6737
7.40231
<0.001
6.747
.327
6.104
7.389
<0.001
15.35
------
------
------
------
<0.001
0.228
0.138
Female
12.3474
8.64323
12.257
.366
11.539
12.974
Model 2
Male
6.6737
7.40231
<0.001
7.72
.337
7.059
8.380
<0.001
15.35
162.67
57.00
47.4846
------
<0.001
0.158
0.193
Female
12.3474
8.64323
11.043
.381
10.295
11.792
Model 3
Male
6.6737
7.40231
<0.001
6.411
.328
5.767
7.055
<0.001
15.35
------
------
------
68.43
0.020
0.008
0.163
Female
12.3474
8.64323
12.675
.368
11.953
13.397
Model 4
Male
6.6737
7.40231
<0.001
7.447
.329
6.802
8.093
<0.001
15.35
162.67
57.00
47.4846
68.43
0.005
0.006
0.238
Female
12.3474
8.64323
11.383
.373
10.651
12.115
cSBP: central (aortic) systolic blood pressure. MV: mean value: SD and SE: standard deviation and error, respectively. CI: confidence interval. cAIx: central (aortic) augmentation index (net value). A was considered statistically significant.
