“…For rat research though, age is confounded by weight, which increases with age ( Figure 1), and weight is a known risk factor for DCS in rats (Lillo andMacCallum, 1991, Arieli et al, 2007). Sex has also recently been shown associated with the risk of DCS in rats and VGE grades have been found higher in male divers over females (Mazur et al, 2014, Buzzacott et al, 2014, Boussuges et al, 2009 (Leening et al, 2014).…”