“…Several studies have compared the effects of different interfaces on outcomes including residual AHI, CPAP pressure, and adherence. Yet, the results remain inconsistent (Bachour et al, 2013 ; Bakker, Neill, & Campbell, 2012 ; Beecroft et al, 2003 ; Bettinzoli et al, 2014 ; Blanco, Ernst, Salvado, & Borsini, 2019 ; Borel et al, 2013 ; Casanova et al, 2013 ; Deshpande et al, 2016 ; Duarte, Mendes, Oliveira, Magalhaes‐da‐Silveira, & Gozal, 2020 ; Ebben, Milrad, Dyke, Phillips, & Krieger, 2016 ; Ebben, Narizhnaya, Segal, Barone, & Krieger, 2014 ; Ebben et al, 2012 ; Foellner et al, 2020 ; Goh et al, 2019 ; Kaminska et al, 2014 ; Lanza et al, 2018 ; Lebret et al, 2015 ; Lebret et al, 2018 ; Massie & Hart, 2003 ; Mortimore, Whittle, & Douglas, 1998 ; Prosise & Berry, 1994 ; Rowland et al, 2018 ; Ryan et al, 2011 ; Schell & Soose, 2017 ; Shirlaw, Duce, Milosavljevic, Hanssen, & Hukins, 2019 ; Teo et al, 2011 ; Westhoff & Litterst, 2015 ; Zampogna et al, 2019 ; Zhu et al, 2013 ) as RCTs are commonly underpowered by small sample sizes, while large‐scale observational studies may be biased due to various confounders derived from participant characteristics and study design. A Cochrane systematic review (Chai et al, 2006 ) previously concluded that the optimal form of CPAP delivery interface remained unclear.…”