Table 4.
SDB Status and Subtypes at Baseline and Follow-Up (N = 234)
| Baseline SDB Subtypes | Follow-Up | |||||
|---|---|---|---|---|---|---|
| No SDB OAHI<5/h | Primary Snoring | OAHI ≥5/h REM-OSA | OAHI ≥5/h Non REM-OSA | Subtotal | ||
| Incidence/Progression | Normal | – | 7/95 | 10/95 | 7/95 | 24/95 (25%) |
| Primary snoring | – | – | 5/47 | 7/47 | 12/47 (26%) | |
| Mild OSA – REM-OSA (OAHI 1-<5/h) | – | – | – | – | – | |
| Mild OSA – Non REM-OSA (OAHI 1-<5/h) | – | – | – | – | – | |
| Persistence | Normal | 71/95 | – | – | – | 71/95 (75%) |
| Primary snoring | – | 9/47 | – | – | 9/47 (19%) | |
| Mild OSA – REM-OSA (OAHI 1-<5/h) | – | – | 7/45 | 4/45 | 11/45 (24%) | |
| Mild OSA – Non REM-OSA (OAHI 1-<5/h) | – | – | 2/28 | 5/28 | 7/28 (25%) | |
| MS OSA – REM-OSA (OAHI ≥5/h) | – | – | 6/13 | 1/13 | 7/13 (54%) | |
| MS OSA – Non REM-OSA (OAHI ≥5/h) | – | – | 4/6 | 0/6 | 4/6 (67%) | |
| Remission/Improvement | Primary snoring | 26/47 | – | – | – | 26/47 (55%) |
| Mild OSA – REM-OSA (OAHI 1-<5/h) | 27/45 | 7/45 | – | – | 34/45 (76%) | |
| Mild OSA – Non REM-OSA (OAHI 1-<5/h) | 20/28 | 1/28 | – | – | 21/28 (75%) | |
| MS OSA – REM-OSA (OAHI ≥5/h) | 4/13 | 2/13 | – | – | 6/13 (46%) | |
| MS OSA – Non REM-OSA (OAHI ≥5/h) | 1/6 | 1/6 | – | – | 2/6 (33%) | |
Abbreviations: OSA, obstructive sleep apnea; MS, moderate-to-severe; h, hour; OAHI, obstructive apnea–hypopnea index; REM, rapid-eye-movement.