Table 2.
Ambulatory blood pressure variability
| Parameter | Control | COVID | P Value |
|---|---|---|---|
| Systolic BP, mmHg | |||
| SDday | 9.3 ± 2.5 | 10.4 ± 2.0 | 0.175 |
| SDnight | 8.3 ± 2.9 | 8.8 ± 3.0 | 0.615 |
| SDdn | 9.0 ± 2.1 | 9.8 ± 1.7 | 0.228 |
| ARVa | 9.0 ± 1.6 | 9.6 ± 1.6 | 0.201 |
| Diastolic BP, mmHg | |||
| SDdaya | 8.1 ± 1.5 | 9.0 ± 2.5 | 0.441 |
| SDnight | 6.7 ± 1.9 | 6.6 ± 2.2 | 0.905 |
| SDdn | 7.6 ± 1.2 | 8.2 ± 2.0 | 0.414 |
| ARV | 7.4 ± 1.0 | 7.8 ± 1.5 | 0.428 |
| Mean BP, mmHg | |||
| SDday | 7.7 ± 1.8 | 8.7 ± 2.3 | 0.244 |
| SDnight | 6.8 ± 1.9 | 6.6 ± 2.4 | 0.803 |
| SDdn | 7.4 ± 1.4 | 7.9 ± 1.9 | 0.456 |
| ARV | 7.2 ± 0.9 | 7.6 ± 1.4 | 0.363 |
Values are means ± SD. ARV, average real variability; BP, blood pressure; SDday, daytime standard deviation; SDdn, 24-h standard deviation weighted for daytime and nighttime variability; SDnight, nighttime standard deviation. Independent sample t tests were used to compare between control (n = 10; 4 males) and COVID (n = 21; 8 males) groups. aNon-normalized data were analyzed using Mann-Whitney U test.