Cognitive and affective changes in mild to moderate Alzheimer's disease patients undergoing switch of cholinesterase inhibitors: a 6-month observational study.

Differences in frequency from baseline to 6-month follow-up for each category of depression and apathy did not reach statistical significance either in the subgroups of mild and moderate AD or in the total groups (p>0.1 for all comparisons) (see Table 2 ).

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