“…Among patients with OSA, the level of social support is associated with the disease severity (Günbey and Karabulut, 2014), and the sense of mastery is positively associated with both physical and mental quality of life even after adjustment for age, obesity, chronic diseases, erectile dysfunction, sleepiness, mood and financial strain (Lang et al, 2016). Therefore, behavioural interventions aimed at weight management in OSA patients would optimally positively impact most or all four factors of psychosocial functioning: well-being, basic functioning, self-mastery and interpersonal and social relationships (Ro and Clark, 2009).…”