“…Three (13%) studies [9,16,17] examined only females and 2 (8%) studies did not report gender [21,30], but the rest of the studies included both genders. Race/ethnicity of study participants was not reported in 3 (13%) studies [18,22,31]. One study examined Caucasians [32], 12 (50%) studies included multiple ethnicities (generally Caucasian, African American, and Latino)[7,11,12,14-16,19,21,23,25,26,30], 5 (21%) studies were African American only [8,9,20,27,28], 2 study samples were Latino[13,17], and 1 study sample was South Korean [24].…”