Baseline sleep study data for enrolled patients, overall and by type of SDB
| Overall | Type of SDB* | P value | ||
| CSA | eCSA or co-exCSA/OSA | |||
| Respiratory sleep study data | ||||
| n (%) | 503 (100) | 345 (69) | 156 (31) | |
| AHI/hour | 42 (30–55) | 43 (32–56) | 40 (28–53) | 0.04 |
| Central AHI/hour | 21 (12–32) | 29 (19–41) | 12 (5–12) | <0.01 |
| Obstructive AHI/hour | 26 (5–24) | 6 (1–17) | 20 (9–30) | <0.01 |
| Hypopnoea index/hour | 16 (12–26) | 17 (10–28) | 15 (7–23) | 0.06 |
| Periodic breathing pattern, n (%) | 246 (49) | 180 (55) | 66 (44) | 0.04 |
| Time spent with SpO2 <90%, min | 33 (5–101) | 30 (5–96) | 44 (8–109) | 0.31 |
| Oxygen desaturation index (≥3%)/hour | 36 (23–51) | 36 (23–51) | 36 (23–51) | 0.99 |
| Epworth Sleepiness Scale score | 7 (4–11) | 7 (4–11) | 7 (4–10) | – |
Values are median (IQR) or number of patients (%).
*Type of SDB data were unavailable in two patients.
AHI, Apnoea–Hypopnoea Index; Co-ex CSA/OSA, coexisting central sleep apnoea/obstructive sleep apnoea; eCSA, emergent central sleep apnoea; SDB, sleep-disordered breathing; SpO2, oxygen saturation.