“…Five of those studies revealed that the RD phenomenon is greater among younger age groups (Gastal et al, 2000;Kastrup, 1987aKastrup, , 1987bMorlino et al, 2011;Neto & da Silva, 2008;Woogh et al, 1977), particularly those aged between 15 and 24 years (Kastrup, 1987a, Kastrup 1987bWoogh et al, 1977), 15 and 35 years (Gastal et al, 2000) or 16 and 45 years (Morlino et al, 2011), and one study suggests that older age is a protective variable, associated with lower readmission risk (Frick et al, 2013). Five studies concluded that there was no significant difference regarding age between RD patients and non-RD patients (di Lorenzo et al, 2016;Bobo et al, 2004;Koparal et al, 2021;Oyffe et al, 2009;Schmutte et al, 2009). Males were more likely to have multiple hospitalizations, according to some authors (Gastal et al, 2000;Haywood et al, 1995;Kastrup, 1987a, 1987bKoparal et al, 2021 but the majority of the studies concluded that neither gender was significantly associated with the RD phenomenon (Bobo et al, 2004;di Lorenzo et al, 2016;Frick et al, 2013;Neto & da Silva, 2008;Schmutte et al, 2009;Woogh et al, 1977).…”