“…As previously mentioned, not all studies provided a reference for their measure/method (e.g., An et al., 2012 ; Arumugam et al., 2021 ; Blamey et al., 2001 ; Boonen et al., 2020 ; Daneshmandan et al., 2009 ; Melo et al., 2017 ) and not all studies described the measure/method they were using (e.g., Alenzi et al., 2020 ; Jalil-Abkenar et al., 2013 ; Venkataramani et al., 2021 ; Wu et al., 2008 ; Zhou et al., 2013 ). In some cases, it was therefore unclear exactly what measure/method was being used (e.g., das Neves et al., 2020 ; Lucchesi et al., 2015 ; Tomblin et al., 2008 ; Warner-Czyz & Davis, 2008 ; Zachariah & Kumaraswamy, 2015 ). It is an interesting result that when the subjective and objective measurements are compared, more of the studies conducted in English speaking countries used objective measures, and more of the studies conducted in different languages, used subjective scales (See Table 2 for evidence synthesis summary).…”