 Subjects will all receive ApneaLinkTM Air ResMed, Poway, CA, a FDA-approved, non-invasive, portable, home polysomnography device, and instructions for using the device during one night of sleep. They will be given contact information if they have questions regarding use of the device. Subjects will receive a prepaid FedEx envelope to return the device. They will receive a parking voucher worth up to a maximum of 7 during this appointment. Subjects will be compensated 50 check by mail once the device is received. A follow-up phone call will be made by the PI to inform the subject of the results of the home polysomnography study. Subjects who screen positive AHI 5 by home polysomnography will be referred to Duke Sleep Medicine for further evaluation. Pregnancy outcomes will be followed for all subjects. 