“…See Table 2 for a list of demographic and ecological factors that demonstrated associations with transition readiness. Twenty-six studies assessed age, and 19 found it to be positively related to transition readiness (Beal et al, 2016;Bingham, Scalzi, Groh, Boehmer, & Banks, 2015;Dwyer-Matzky, Blatt, Asselin, & Wood, 2018;Eaton et al, 2017;Fredericks et al, 2010;Gilleland et al, 2012;Gray et al, 2015;Gumidyala et al, 2018;Haarbauer-Krupa et al, 2019;Hart, Pollock, Hill, & Maslow, 2017;Javalkar, Fenton, Cohen, & Ferris, 2014;Lazaroff, Meara, Tompkins, Peters, & Ardoin, 2018;Mackie et al, 2016;Rosen et al, 2016;Sawicki, Kelemen, & Weitzman, 2014;Speller-Brown et al, 2015;Stewart et al, 2017;Whitfield, Fredericks, Eder, Shpeen, & Adler, 2015). Studies found that increasing age was positively related to decreasing knowledge deficits in youth with sickle cell disease or heart disease (McPherson, Thaniel, & Minniti, 2009;Uzark et al, 2015).…”