Figure 4. Baseline CSF Ng levels as the predictor of conversion from CN to MCI. The Kaplan-Meier curve showed the predictive value of the CSF Ng for progression from cognitively normal to MCI. The CSF Ng was analyzed as categorical variables (dichotomized at 389 pg/mL), and analysis was adjusted for age, sex, educational level, and APOE ε4 genotype. Abbreviations: CN, cognitively normal; MCI, mild cognitive impairment; CSF: cerebrospinal fluid; Ng, neurogranin.