Table 2.
Indicators of PSG in elderly patients with and without OSA.
| OSA parameters | N-OSA (n = 20) | OSA (n = 60) | p-value |
|---|---|---|---|
| AHI (events per hour) | 1.3 (0.6–3.1) | 22.5 (9.1–32.8) | <0.001 |
| ODI (events per hour) | 1.5 (0.2–3.2) | 18.8 (11.1–35.4) | <0.001 |
| SpO2min (%) | 88.0 (85.0–91.0) | 80.5 (67.5–87.0) | <0.001 |
| SpO2mean (%) | 95.0 (92.0–97.0) | 93.0 (91.0–95.0) | 0.008 |
| AHTmax (s) | 39.5 (25.5–58.0) | 59.0 (47.5–80.9) | 0.002 |
| AHTmean (s) | 20.6 (17.8–20.9) | 25.6 (19.9–30.7) | 0.465 |
| MAI (events per hour) | 6.8 (3.2–13.2) | 10.5 (7.0–20.6) | 0.076 |
| Snore (times) | 0 (0–19.5) | 32 (2.5–129) | 0.006 |
| TST (min) | 415 (317–473) | 371 (303–432) | 0.201 |
| Sleep efficiency (%) | 82.8 (71.2–87.6) | 75 (67.5–87.0) | 0.902 |
Data are presented as median (IQR). IQR, Inter-Quartile Range; PSG, polysomnography; AHI, apnea-hypopnea index; ODI, oxyhemoglobin desaturation index; SpO2min, minimum pulse oxygen saturation; SpO2mean, mean pulse oxygen saturation; AHTmax, maximum apnea/hypopnea time; AHTmean, mean apnea/hypopnea time; MAI, microarousal index; TST, total sleep time.