Table 6: Regression analysis with relative brachial nocturnal blood pressure decrease as dependent variable in hypertensive patients and healthy controls.
Patients |
B (95%CI) |
SE B |
β |
p |
Constant |
17.07 |
(1.05; |
33.09) |
8.03 |
|
0.04 |
eGFR, mL/min/1.73 m2
|
-0.01 |
(-0.17; |
0.15) |
0.08 |
-.01 |
0.93 |
Presence of OSA |
-1.48 |
(-5.66; |
2.69) |
2.09 |
-.10 |
0.48 |
Body mass index, kg/m2
|
-0.24 |
(-0.66; |
0.19) |
0.21 |
-.15 |
0.27 |
24h u-Na, mmol/24 hour |
0.02 |
(-0.02; |
0.06) |
0.02 |
.14 |
0.28 |
R Square for this model: 0.05, p=0.51 |
Controls |
B (95%CI) |
SE B |
β |
p |
Constant |
18.19 |
(-6.64; |
43.01) |
12.36 |
|
0.15 |
eGFR, mL/min//1.73 m2
|
0.00 |
(-0.18; |
0.18) |
0.09 |
.00 |
0.99 |
Presence of OSA |
2.43 |
(-1.99; |
6.86) |
2.20 |
.16 |
0.27 |
Body mass index, kg/m2
|
-0.14 |
(-1.08; |
0.81) |
0.47 |
-.05 |
0.77 |
24h u-Na, mmol/24 hour |
0.01 |
(-0.05; |
0.06) |
0.03 |
.04 |
0.82 |
R Square for this model: 0.025, p=0.87 |
Abbreviation: eGFR: estimated Glomerular Filtration Rate, OSA: Obstructive Sleep Apnoea, 24h u-Na: 24h urinary sodium excretion.
Statistics were performed using a linear regression model. Dependent variable was relative nocturnal brachial systolic BP decrease. Independent variables were eGFR, presence of OSA (AHI > 5), BMI, and 24h U-Na.