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Number of patients with sleep apnea (yes/no) and an ODI of ≥15 or <15 (as measured by the polygraph).
| Oxygen desaturation index measured by polygraph | Sleep apnea present, n (%) | Sleep apnea absent, n (%) | Total, n (%) |
| ≥15 | 12 (54) | 0 (0) | 12 (54) |
| <15 | 1 (5) | 9 (41) | 10 (46) |
| Total | 13 (59) | 9 (41) | 22 (100) |
