Table 3.
Dataset features
| Description | Types | Additional information |
|---|---|---|
| RID (roster ID) uniquely identifies every participant | Nominal | 1737 participants |
| Participant ID | Nominal | 1737 participants |
| Visit code, time point when the visit takes place | Numeric | Mean 7.3 visits per participant; (bl is baseline or month 0, m06 is month 6, etc.) |
| Site ID | Numeric | 62 Sites |
| Participant’s age | Numeric | Mean 73.7 |
| Participant's gender | Nominal | Male 957/female 780 |
| Participant's years of education | Numeric | Mean 15.9 |
| Race, Latino vs non-Latino | Nominal | Latino 58; non-Latino 1669; unknown 11 |
| Race, white, black, etc. | Nominal | White 1605; black 77; Asian 29; mixed race 18; Hawaiian 2; Indian 3; unknown 3 |
| Marital Status | Nominal | Married 1311; widowed 206; divorced 150; single 64; unknown 7 |
| Months passed since baseline visit | Numeric | 0,3,6…126 |
| Cognitive test—participant everyday cognitive—everyday memory () | Numeric | Mean 2.07 |
| Cognitive Test—Participant Everyday Cognitive—Total | Numeric | Mean 1.68 |
| Cognitive test—study partner everyday cognitive—everyday memory | Numeric | Mean 2.14 |
| Cognitive test—study partner everyday cognitive—total | Numeric | Mean 1.82 |
| Cognitive test—participant everyday cognitive—everyday memory (baseline) | Numeric | Baseline ECogPT reading, with several missing values |
| Cognitive test—participant everyday cognitive—total (baseline) | Numeric | Baseline ECogPT reading, with several missing values |
| Cognitive test—study partner everyday cognitive—everyday memory (baseline) | Numeric | Baseline ECogSP reading, with several missing values |
| Cognitive test—study partner everyday cognitive—total (baseline) | Numeric | Baseline ECogSP reading, with several missing values |
| Baseline clinical diagnosis | Nominal | AD 342,EMCI 310, LMCI 562, SMC 106, CN 417, |
| Clinical diagnosis | Nominal | AD 336, AD to MCI 1, MCI 864, MCI to AD 5, MCI to NL 2, NL 521, NL to MCI 1 |