Obstructive sleep apnea (OSA) is a common disorder with serious complications. Positive airway pressure (PAP) is the first line treatment of OSA, which eliminates obstructive events, reduces daytime sleepiness, and improves quality of life, especially in those with excessive daytime sleepiness. However, despite the benefits of the PAP treatment, overall acceptance and adherence rates are not fully promising. Less is known regarding the PAP adherence rates in Turkey. In the current study, the researchers primarily addressed if an intensified patient education strategy including the polysomnography (PSG) charts viewing followed by frequent follow-ups would improve the compliance rates at long-term in patients with OSA.