Longitudinal cognition and diagnosis

Participants in the Stanford ADRC clinical cohort are seen once a year with the NACC Uniform Data Set (UDS v3). This study shares every visit since 2015 for 520 participants (up to six visits each), and the demographics of the whole cohort of 644.

• visits: one row per participant and visit: moca, mmse, cdr_global, cdr_sb, gds15 and the consensus diagnosis at that visit.
• demographics: one row per participant: sex, age at enrolment, education, race and ethnicity, APOE ε4 alleles.
• uds_visits (original): the full UDS export stays at Stanford ADRC; it is described here and can be analysed by a real run.

HC healthy control · MCI mild cognitive impairment · AD Alzheimer’s disease dementia · PD Parkinson’s disease · PD-MCI Parkinson’s with MCI · DLB dementia with Lewy bodies.

1. Diagnosis can change between visits (for example HC → MCI); diagnosis is the one given at that visit.
2. years_from_baseline is exact to the day, rounded to two decimals; dates were removed before the protected copy was made.
3. Participants who missed a year have a gap, not an empty row.

Rao A, Alvarez S, et al. Longitudinal cognition and diagnosis in the Stanford ADRC. Stanford ADRC, 2026. Funded by NIH/NIA grant P30AG066515.