. A situation was simulated in which two blinded and independent observers would be able to indicate CPAP treatment if the patients were snorers with frequent apnea reports (≥3-4 times a week) and overweight (BMI > 25 kg/m(2)) plus one of the following: diurnal symptoms (tiredness after sleeping or at waking time ≥3-4 times a week or Epworth sleepiness scale>11), arterial hypertension, cerebrovascular accident, coronary event, type II diabetes or cardiac arrhythmias (observer 1, clinical criteria) or on the