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Metagraphs of behavioral outcomes of mild to severe (3 studies) and moderate to severe (2 studies) subgroups. DMvsD = Combination therapy with donepezil and memantine versus monotherapy with donepezil, denoted by Roman numeral I; DMvsM = combination therapy with donepezil and memantine versus monotherapy with memantine, denoted by Roman numeral II. NPI scale was used in each study and mean differences were used in determining effect sizes.
