Table 2.
Inadequate use of CPAP before and after surgery
| Group A n = 272 |
Group B n = 132 |
p-value | |
|---|---|---|---|
| Before surgery (n, %) | |||
| Inadequate CPAP use | 42 (15.4) | 5 (3.8) | 0.049 |
| - CPAP discontinued | 23 (8.4) | 0 | |
| - CPAP use < 4 h/night | 19 (7.0) | 5 (3.8) | |
| Adequate CPAP use | 230 (84.6) | 127 (96.2) | |
| 1 month postoperative (n, %) | < 0.001 | ||
| Inadequate CPAP use | 117 (43.0) | 27 (20.5) | |
| - CPAP discontinued* | 81 (29.8) | 12 (9.1) | |
| - CPAP use < 4 h/night | 36 (13.2) | 15 (11.4) | |
| Adequate CPAP use | 155 (56.9) | 105 (79.5) | |
| 3 months postoperative (n, %) | < 0.001 | ||
| Inadequate CPAP use | 157 (57.7) | 50 (37.9) | |
| - CPAP discontinued* | 130 (47.8) | 22 (16.7) | |
| - CPAP use < 4 h/night | 27 (9.9) | 28 (21.2) | |
| Adequate CPAP use | 115 (42.3) | 82 (62.1) | |
| 6 months postoperative (n, %) | < 0.001 | ||
| Inadequate CPAP use | 199 (73.2) | 51 (38.6) | |
| - CPAP discontinued* | 180 (66.2) | 45 (34.0) | |
| - CPAP use < 4 h/night | 20 (7.4) | 6 (4.6) | |
| Adequate CPAP use | 71 (26.1) | 76 (57.6) | |
| Missing** | 2 (0.7) | 5 (3.8) |
Group A: newly diagnosed OSA patients, group B: patients with a pre-existent OSA diagnosis
*Cumulative number of patients who discontinued CPAP therapy
**Missing data: 6 lost to FU, 1 fatality (156 days after surgery)
CPAP continuous positive airway pressure, OSA obstructive sleep apnea