Community Health Advocates for Motivating PAP Use in Our Neighborhoods.

Inclusion Criteria

* ≥ 18 years of age
* Moderate-to-severe OSA
* Available to attend study visits and sessions
* Reliable access to a phone

Exclusion Criteria

* Prior or current use of PAP therapy or other treatment (e.g., oral appliance) for OSA
* History of upper airway surgery for OSA
* Moderate to severe insomnia
* Commercial drivers
* Use of non-standard PAP including adaptive servo-ventilation or bi-level positive airway pressure
* Report of motor vehicle accident or near-miss due to sleepiness within the 2 previous years
* Unstable medical conditions that may preclude enrollment in the protocol such as: uncontrolled angina and/or congestive heart failure, uncontrolled blood pressure or resistant hypertension, severe chronic obstructive pulmonary disease, cancer, and active psychiatric disease (e.g., major depression)
* Other sleep disorders (e.g., circadian rhythm disorder)
* Use of supplemental oxygen during wakefulness or sleep
* Central sleep apnea, obesity hypoventilation syndrome or Cheyne-Stokes respiration based on the home sleep apnea test
* Resting awake oxygen saturation (SpO2) \< 90%
* Participation in another clinical trial