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(a) Mean change in NPZ-7. (b) Mean change in information processing speed. (c) Mean change in executive functioning. Values are expressed as z-score means, bars as standard errors. P values and d sizes are provided for rivastigmine vs control group comparisons. Abbreviations: CG, control group; EF, executive functioning; IPS, information processing speed; LG, lithium group; RG, rivastigmine group.
