TABLE 1

STOP, the Berlin Questionnaire and the ASA checklist in pre-operative patients

AHI ≥5 events per hAHI ≥15 events per hAHI ≥30 events per h
Sensitivity
 STOP66%74%79%
 Berlin Questionnaire69%79%87%
 ASA checklist72%79%87%
Specificity
 STOP60%53%49%
 Berlin Questionnaire56%50%46%
 ASA checklist38%37%36%
  • STOP: snoring, tiredness, observed apnoeas, pressure; ASA: American Society of Anesthesiologists; AHI: apnoea–hypopnoea index.