| AHI | Apnea–hypopnea index |
| B | beta coefficient |
| CABG | coronary artery bypass grafting |
| CI | 95%-confidence intervals |
| COPD | chronic obstructive pulmonary disease |
| CSA | central sleep apnea |
| FEV1/FVC | forced expiratory volume/forced vital capacity |
| GOLD | Global Initiative for Chronic Obstructive Lung Disease |
| HF | heart failure |
| ODI | oxygen desaturation index |
| OHS | obesity hypoventilation syndrome |
| OSA | obstructive sleep apnea |
| SDB | sleep-disordered breathing |
| T90 | nocturnal hypoxemic burden (i.e., oxygen saturation levels < 90%) |
| T90/TRT | nocturnal hypoxemic burden index |
| T90desaturation | T90 due to intermittent hypoxemia |
| T90non-specific | T90 due to nonspecific and noncyclic SpO2-drifts |
| TRT | total recording time |
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