Characteristics of the study group stratified on the basis of gender (G) and incidence of diabetes (D).

Data are given as medians with ranges, followed by the sample sizes in parentheses. Serum leptin levels are given as ng/ml while CSF leptin levels are given as pg/ml; serum AEA and 2-AG levels are given as ng/ml; and CSF AEA and 2-AG levels are given as pg/ml. P values are calculated using a non-parametric two-way robust Wilcoxon analysis [38]. Significant correlations are shown in boldface.Characteristics of the study group stratified on the basis of gender (G) and incidence of diabetes (D).