Figure 3 Kaplan-Meier curves of time to conversion within all subjects without dementia at baseline

MRI markers were dichotomized based on the median value: (A) baseline hippocampal volume, (B) hippocampal atrophy rate, (C) baseline whole brain volume, and (D) whole brain atrophy rate. On the X-axis: follow-up duration (years); on the Y-axis: proportion of subjects who remained stable. Blue line: highest baseline volume (A; C) or lowest atrophy rate (B; D). Red line: lowest baseline volume (A; C) or highest atrophy rate (B; D). Tables represent the number of patients exposed to risk at the intervals of 0, 1, 2, and 3 years.