Figure 6

Probabilities of functioning over time among mild cognitive impairment (MCI)converters to Alzheimer's disease (AD) versus MCI non-converters.(a) Probability of relatively high functioning withattention/sustained vigilance from 24 to 0 months before conversion to AD amongMCI subjects. (b) Probability of relatively high functioning withattention/sustained vigilance from baseline to 24 months among MCI subjects whodid not convert within 36 months.