Severe obstructive sleep apnea is defined as an apnea-hypopnea index of greater than?

Obstructive sleep apnea/ hypopnea syndrome quantification and severity scale is graded according to number of apnea/ hypopnea index events per hour Mild OSAHS 5 -14 events / hour Moderate OSAHS 15-29 events / hour Severe OSAHS >30 events / hour