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STOP, the Berlin Questionnaire and the ASA checklist in pre-operative patients
| AHI ≥5 events per h | AHI ≥15 events per h | AHI ≥30 events per h | |
| Sensitivity | |||
| STOP | 66% | 74% | 79% |
| Berlin Questionnaire | 69% | 79% | 87% |
| ASA checklist | 72% | 79% | 87% |
| Specificity | |||
| STOP | 60% | 53% | 49% |
| Berlin Questionnaire | 56% | 50% | 46% |
| ASA checklist | 38% | 37% | 36% |
STOP: snoring, tiredness, observed apnoeas, pressure; ASA: American Society of Anesthesiologists; AHI: apnoea–hypopnoea index.
