“…Pain was measured to determine relief in the intensity or severity of pain after NPIs in all 22 studies. Pain status was evaluated using the Brief Pain Inventory (BPI) ( n = 11) (Jahn et al, 2014; Kim et al, 2013; Koller et al, 2018; Kroenke et al, 2010; Kwekkeboom et al, 2012; Oldenmenger et al, 2011; Raphaelis et al, 2020; Thomas et al, 2012; van der Peet et al, 2009; Ward et al, 2008, 2009), a visual analogue scale (VAS) ( n = 5) (Burrai et al, 2014; Huang et al, 2010; Jane et al, 2011; Sharif Nia et al, 2017; Wilkie et al, 2010), a numeric rating scale (NRS) ( n = 3) (Koller et al, 2013; Quinlan‐Woodward et al, 2016; Rustoen et al, 2012, 2014), the M.D. Anderson Symptom Inventory (MDASI) ( n = 2) (Yeh et al, 2016; Wyatt et al, 2017), and the Short‐Form of the McGill Pain Questionnaire (SF‐MPQ) ( n = 1) (Li et al, 2011).…”