The AASM 2012 recommended hypopnea criteria increase the incidence of obstructive sleep apnea but not the proportion of positional obstructive sleep apnea

This study demonstrates that, compared to AASM2007Rec, AASM2012Rec almost doubles the incidence of OSA but does not alter the proportion of OSA patients with pOSA. The proportion of female OSA patients with pOSA however, increases as a result of AASM2012Rec. Furthermore, the use of different minimum recording times in each sleeping position can alter the proportion of spOSA.