Figure 2From: Effect of lisdexamfetamine dimesylate on sleep in adults with attention-deficit/hyperactivity disorderEffect of LDX on global PSQI scores. Mean global PSQI scores of all treatment groups decreased from baseline indicating an improvement in sleep quality. Numbers within bars indicate numbers of subjects. (SD = standard deviation; SE = standard error; LS = least squares; PSQI = Pittsburgh Sleep Quality Index; LDX = lisdexamfetamine dimesylate).Back to article page