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Montreal Cognitive Assessment (MoCA) scores (intention-to-treat analysis set). (a) Mean MoCA scores at baseline, month 1, month 3 and month 6. Error bars represent SD. (b) Mean change from baseline in MoCA scores. Error bars represent 95% confidence interval (CI) of mean. aMoCA score range for mild cognitive impairment: 20–25 (≤ 10 years of education); 26 (>10 years of education); normal: ≥25/26–30; dementia: <20. *P < 0.001 (paired t-test).
