“…In a similar vein, many indices have been developed for specific specialized areas. For example, those for students (Álvarez Vaz et al, 2016; Alves and Raposo, 2007a, 2007b; Pardiyono and Puspita, 2020; Turkyilmaz et al, 2018), health care (Ariffin et al, 2022; Raposo et al, 2009), Transportation (Eboli and Mazzulla, 2009), tourists and tourism (Chen et al, 2016; Khan and Hashim, 2020; Pilelienė and Grigaliūnaitė, 2019; Saayman et al, 2018; Song et al, 2011, 2012), public transport (Zhang et al, 2019), volunteer (Ling et al, 2019), couples (Okhotnikov and Wood, 2020), internet banking (Keskar et al, 2020), assisted living (Holmes et al, 2021), government websites (Li, 2021), dental specialty centers (da Silva et al, 2022), and so on.…”