Funding Issues

This randomized controlled study will directly evaluate whether unattended polysomnography (level 2 sleep study) in individuals referred for sleep apnea or hypersomnia, including those with comorbidities of insomnia and sleep-related movement disorders, provides similar patient outcomes when compared to level 1 sleep studies.

Individuals referred to the Sleep Disorder Centre with a major complaint of snoring or, apneas or hypersomnia, with at least one additional minor concern of snoring, apneas, restless leg syndrome or insomnia, will be considered for entry into the study. Using a randomized controlled trial design, study participants will be randomly assigned to either the intervention group who will undergo a full unattended polysomnography (level 2 home sleep study) using the Prodigy portable wireless sleep monitor or in-lab polysomnography (level 1 sleep study). Other aspects of care including the clinical assessment will be equivalent between groups. A randomly assigned sleep specialist physician will make treatment recommendations to the patient based on the sleep study results and determine the need for a subsequent testing (including repeat sleep studies) as part of each patient encounter. Physicians participating in the study will receive an introduction to the Odds Ratio Product (ORP) and training on its diagnostic potential. Diagnostic confidence using a 5 point Likert scale from 10% (very unsure) to 90% (very confident) will be assessed after each sleep study review.

Inclusion Criteria:

• referral for major concern of "snoring" or "apnea" or "hypersomnia" with additional minor concerns of "snoring", "apneas" "restless leg syndrome" or "insomnia"
• willing to undergo a sleep study

Exclusion Criteria:

• referrals where parasomnias, respiratory failure, narcolepsy listed as concerns
• comorbid congestive heart failure, ischemic heart disease, arrhythmia, stroke, chronic obstructive pulmonary disease/respiratory failure, patients with a BMI 50 kg/m2
• undergone a previous sleep study