“…Screening identified 19 relevant studies (see Figure 2 and Table 1). Of the 19 included studies, 9 measured rumination (emotional rumination: Aldridge-Gerry et al, 2011; rumination: Ciesla et al, 2011; Dvorak et al, 2011; Willem et al, 2011; Cropley et al, 2012; Adrian et al, 2014; Frone, 2015; Willem et al, 2014; angry rumination: Ciesla et al, 2011; anxious rumination: Harwell et al, 2011), 9 studies measured health-related worry (Dijkstra and Brosschot, 2003; Li et al, 2009; Malmi et al, 2010; Rutten et al, 2011; Ferrer et al, 2013a,b; Swayampakala et al, 2013; Yong et al, 2014; Bernat et al, 2015), and 2 studies measured general worry (Shoal et al, 2005; Ciesla et al, 2011). In addition, four studies measured reflection (Willem et al, 2011, 2014; Cropley et al, 2012; Adrian et al, 2014).…”