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Correlations between SPARE-BA Gap and SPARE-AD. Decreased correlation between SPARE-BA Gap (SPARE-BA minus chronological age) and SPARE-AD was considered as evidence of disentanglement. Pearson correlation coefficients including all data points (n = 4054) are labelled on top of each subplot. CN, cognitively normal; MCI, mild cognitive impairment; AD, Alzheimer’s disease; *P < 0.05; **P < 0.0001.
