Figure 4

Kaplan–Meier estimates of the rate of conversion from mild cognitive impairment (MCI) to Alzheimer's disease (AD) dementia for the fast progression (FastP) group and non-FastP group. Panels a–d showed the Kaplan–Meier estimates for the conversion of MCI to AD. Panels showed results (a) for Alzheimer's Disease Neuroimaging Initiative (ADNI) MCI subjects; (b) for Vitamin early MCI (E MCI) subjects; (c) and (d) for the stratified analysis according to APOE ɛ4 status (+/−) in the combined MCI sample set.