Clinical and cognitive variables by diagnostic groups.

Data are mean (SD) or N (%). Four participants (3 PD, 1 HR) had missing data for prolactin analyses.Abbreviation: PANSS = Positive and Negative Syndrome Scale; MCCB = MATRICS Consensus Cognitive Battery.†One-way ANOVA was used to compare continuous data among groups. Chi-square test was used to compare categorical data among groups.‡Psychopharmacologic treatment was compared between PD and HR groups (HS were excluded in the comparison).Significant ANOVA post-hoc analyses (with Bonferroni adjustment) are highlighted: a HS vs PD, bHS vs HR, cPD vs HR.