“…In the only study to examine the subtypes of anorexia nervosa, no differences in prevalence were noted based on restricting compared with binge/ purge subtype. 29 Most studies have suggested a relation to low body mass index, 16,29,73,75,79 significant weight loss, 75 and duration of illness, 74 but recent studies have not been as consistent. 29,33 In a recent study of 173 adolescents with anorexia nervosa, Kastner et al 29 showed an association with low body mass index, but this was a small effect size (n 2 = 0.034), and Oflaz et al, 33 in a cross-sectional study of 40 female patients with anorexia nervosa, found no relation to body mass index at all.…”