TABLE 2.
Arterial stiffness and 24-h blood pressure
| Control group (CPAP use) | CPAP withdrawal group | ||||
| Baseline | Follow-up | Baseline | Follow-up | Between-group differences in change from baseline to follow-up (95% CI) | |
| Women and men combined | |||||
| Pulse wave velocity (m/s) | 7.7 ± 1.3 | 7.5 ± 1.2 | 7.8 ± 1.4 | 7.9 ± 1.3 | 0.3 (−0.01 to 0.5) P = 0.090 |
| Augmentation index 75 (%) | 21.5 ± 7.6 | 21.7 ± 7.9 | 22.5 ± 8.8 | 22.7 ± 8.0 | −0.2 (−1.7 to 1.3) P = 0.81 |
| 24-h SBP (mmHg) | 132.0 ± 13.7 | 128.5 ± 13.0 | 134.5 ± 11.3 | 133.8 ± 10.8 | 2.8 (0.2–5.4) P = 0.035 |
| 24-h DBP (mmHg) | 79.0 ± 7.6 | 77.2 ± 7.3 | 79.7 ± 7.6 | 79.6 ± 7.3 | 1.7 (0.1–3.3) P = 0.032 |
| Women | |||||
| Pulse wave velocity (m/s) | 7.8 ± 1.3 | 7.4 ± 0.9 | 7.9 ± 1.4 | 7.7 ± 1.1 | 0.2 (−0.3 to 0.7) P = 0.40 |
| Augmentation index 75 (%) | 26.2 ± 5.8 | 27.0 ± 6.4 | 27.4 ± 7.2 | 27.1 ± 8.1 | −1.1 (−3.6 to 1.4) P = 0.38 |
| 24-h SBP (mmHg) | 133.2 ± 17.2 | 126.4 ± 16.4 | 134.6 ± 12.5 | 132.9 ± 11.9 | 5.1 (1.0–9.5) P = 0.017 |
| 24-h DBP (mmHg) | 78.8 ± 7.2 | 75.4 ± 6.8 | 78.2 ± 6.1 | 77.7 ± 5.7 | 2.9 (0.3–5.4) P = 0.029 |
| Men | |||||
| Pulse wave velocity (m/s) | 7.6 ± 1.4 | 7.6 ± 1.3 | 7.8 ± 1.3 | 8.0 ± 1.4 | 0.3 (−0.0 to 0.6) P = 0.08 |
| Augmentation index 75 (%) | 16.8 ± 7.6 | 16.4 ± 7.9 | 17.6 ± 8.8 | 18.2 ± 8.0 | 1.1 (−0.6 to 2.9) P = 0.20 |
| 24-h SBP (mmHg) | 130.8 ± 12.3 | 130.6 ± 11.5 | 134.5 ± 10.8 | 134.7 ± 10.3 | 0.3 (−2.6 to 3.3) P = 0.82 |
| 24-h DBP (mmHg) | 79.2 ± 7.4 | 79.0 ± 7.4 | 81.2 ± 8.2 | 81.5 ± 7.8 | 0.6 (−1.2 to 2.3) P = 0.54 |
The data are presented as the mean (SD) unless otherwise stated. CPAP, continuous positive airway pressure.