COMPARATORS:

1. Intervention group: In order to address the proposed aims, we will recruit recently diagnosed patients with obstructive sleep apnea (OSA) who have not been initiated on CPAP therapy and randomly assign them to the PDI-IVR system to promote adherence to CPAP therapy (intervention group) or be provided with educational brochures regarding OSA and CPAP therapy (usual care \[control\] group). In the PDI-IVR intervention group, trained and experienced peers (peer-buddy) with sleep apnea will be paired with the newly diagnosed patients over a 6-month period. As in our preliminary study, the peer-buddy will be matched with the subjects with regards to age, gender, race, ethnicity, socioeconomic, and educational backgrounds. During this time the trained peers will share experiences on coping strategies with CPAP device and equipment (promote self efficacy), share their positive experiences (motivational effects and outcome expectancies), share their knowledge of perceived vulnerabilities due to untreated sleep apnea (promote risk perception), share methods for improving efficacy of CPAP equipment and interface (patient education) and prepare their subjects for upcoming physician or respiratory therapist appointments (patient activation). The interaction will occur during supervised "in-person" sessions (two sessions at day 1 and day 7) and also telephone-based conversations through the IVR system (once a week for one month followed by telephone calls on a fortnightly basis). Additionally, they will help the patient navigate the delivery system and effect better care coordination through the IVR system at patient-initiated request.
2. Usual care description: All participants will receive usual care following initiation of CPAP therapy. Usual care of the newly diagnosed patient with OSA consists of attending a CPAP initiation and education class which is conducted either at the patient's home or in the offices of a home care (DME) company by a dedicated respiratory therapist. Patients are educated about the basics of the care and operation of the device, mask and related equipment. Following this CPAP initiation and education class, they receive instructions to either mail-in the CPAP adherence monitoring card ("Smart card") by mail to the therapist about 4 weeks following the initial visit. The adherence information is evaluated and posted in electronic medical records. Patients with OSA will be seen in the sleep clinic at 1 and 3 months following initiation of CPAP therapy and will have the option to call any of their care providers. In order to balance the number of contacts and educational sessions between the two comparison groups, educational brochures (from the AASM) and videos on DVD (from Industry stakeholders) will be mailed to participants. We did not incorporate an attention-control arm requiring in-person contacts as the comparator because the overarching goal of this proposal is to make this study relevant to the real-world conditions of a well measured usual care arm to make the study findings generalizable and better inform patients' decision-making. Such external validity was felt to be of greater value than comparing two conditions that currently do not exist in current practice.

Peer-buddy system: Selection and Training of Peer-buddies: Fifty peer-buddies will be recruited from the four sleep clinics who are adherent to CPAP therapy. Peer buddies will be consented and compensated for their role in the research study ($350 for 6 month participation per subject). Each buddy may be paired with up to 12 subjects over the length of the study.

Training: PI and research staff will educate the peer buddy and provide them with guidelines for their interactions with the research participants. They will be instructed to share their experiences and not to provide medical advice. The sharing of coping strategies will fall under the following categories:

(i) Promote self efficacy: Strategies to deal with CPAP device and equipment (such as pressure ramp feature, humidifier settings, mask and strap application; and cleaning of device and related equipment). (ii) Promote outcome expectancies: Share their positive experiences with regards to effects of CPAP on energy level or vigilance, sense of well-being, hypertension control and other medical benefits that they possibly derived from CPAP therapy. (iii) Risk perception: Share their knowledge of perceived vulnerabilities due to untreated sleep apnea. Share methods for improving efficacy of CPAP equipment and interface (patient education). (iv) Patient activation: Share experiences of how to prepare for upcoming physician or respiratory therapist appointments, such as what questions to ask the healthcare provider, what to take with them (e.g., CPAP adherence card or malfunctioning device, humidifier, or mask, and what to expect at a given provider visit. At the end of the training, a mock interaction between the peer-buddy and PI (playing the role of the patient with OSA) will be undertaken before "certifying" or "graduating" the peer-buddy as competent.

Potential for inter-personal conflicts and management plan: The peer-buddy and research participant will be informed that they can withdraw from participation if there is a potential conflict or difficult situation (they feel threatened, face verbal abuse from subject, individual is too demanding, frequent calls or late night calls). The peer-buddy and subject starting CPAP will provide the research coordinator with an availability sheet as to when they are available to take phone calls and/or appear in person. Each peer-buddy will be paired up with one research participant, and may choose to take on up to 3 patients at a time and take on a new assignment at the end of the 6-month participation period. Peer-buddy and participant will be matched by age, gender, race, ethnicity, and socioeconomic status. The peer-buddies will be instructed not to offer medical advice. If a medical need or problem were to arise, the peer-buddies will be instructed to provide the research participant with the phone number to call the PI (via call operator) who will assess their medical needs and situation.

Fidelity assessments: Twenty percent of the telephonic communications between the peer-buddy and patient will be randomly recorded by IVR system for fidelity assessments by the behavioral therapist (Haynes, Co-investigator). Similarly, 20% of in-person visits will be assessed by the behavioral therapist. Such fidelity assessments will be used to increase fidelity (efficacy) during study.

In-person interactions: In-person interaction will occur on 2 occasions (30-minutes each) within the first 10 days of CPAP initiation. The research coordinator will be present during this interaction but will not be facilitating or running the interaction. A clean CPAP device and related supplies for the patient will need to be present during these interactions for demonstration purposes.

Telephonic IVR interactions: Once a week for the first month followed by 4 phone conversations over the subsequent 2 month period (8 scheduled telephonic interactions) and as needed in the subsequent 3 months. There will be no more than 10 such "as-needed" phone calls in the latter 3-months between participant and peer-buddy. Therefore, over the 6-months, there will not be in excess of 18 phone calls per subject assigned to peer-buddy. Each phone conversation will last a maximum of 30 minutes. The PDI-IVR system will be programmed to recognize the peer-buddy's phones (cell or home) and be programmed to link this with the patient's phones (cell or home) and thereby protect the privacy of both participants. The dyad of the peer-buddy and participant will introduce themselves on a first name basis and will not be required to provide other personal information. However, the study does not preclude them from sharing such information or developing long-lasting friendships. For each dyad, the research coordinator may monitor a few calls (with the participants' knowledge and random IVR-based recording) in order to monitor the content and level of participation between the dyad; however, the coordinators will not direct the participation in any way. Peer-buddies will share their experiences that would promote self-efficacy, outcome expectations, risk perception and patient activation. During in-person interactions, greater emphasis on promotion of self-efficacy will be placed, considering the physicality of the medical device (CPAP) therapy, masks, hoses, humidifiers, and filters. During phone interactions, greater emphasis on promotion of outcome expectancies, risk perception, and patient activation will be undertaken. The research coordinators may provide feedback to the peer-buddy regarding their performance and remind them to cover topics that were not covered in order to ensure fidelity. Either the patient or the peer-buddy (on behalf of the patient) can initiate calls to other members of the inter-disciplinary team, including obtaining CPAP adherence data through the IVR that was derived from the industry server (figure 2). Call backs from any of the providers (physician, RT, RN, DME representative, or sleep tech) will be connected back to the initiator of the call (Patient or peer-buddy). IVR-initiated queries regarding CPAP device - for adherence, leak, and efficacy \[residual obstructive events\] data - will be faxed to the sleep physician's office (or designee \[RN or RT\]) by the IVR with a note for patient call back. Content of interactions will pertain to OSA and CPAP therapy and related supplies (mask, hose, filters and humidifier). Content will include aspects pertaining to mask fitting, using ramp function on CPAP unit, using the CPAP humidification system, etc. Conversations regarding erectile dysfunction or a similar sensitive matter will be discouraged. Both peer-buddy and subject would have provided voluntary consent for sharing their experiences with CPAP therapy and sleep apnea. A checklist of content areas will be provided to the peer-buddy to ensure that such topical areas were discussed by the peer-subject pair. We will refrain from writing a script for the peer-buddy as we believe that would detract from the sense of bond or trust within the dyad.