Table 2. Sample demographic and health characteristics at Wave 2 data collection.
| n = 828 | |
|---|---|
| Age at first cognitive composite* (mean (sd)) | 57.8 (6.4) |
| Years of Follow-up (mean (sd, median, range)) | 6.3 (sd = 1.9, median = 7, range = 2–10) |
| Sex = Female (%) | 560 (67.6) |
| APOE-ε4 Carrier (%) | 312 (37.7) |
| WRAT-3 Reading—Standard Score (mean (sd)) | 105.7 (9.3) |
| CES-D Depression Score (mean (sd)) | 6.6 (6.7) |
| Race (n, % non-Hispanic White) | 812 (98.2) |
| Years of Education (mean (sd)) | 16.2 (2.8) |
| Systolic Blood Pressure (mean (sd)) | 124.2 (15.9) |
| Diastolic Blood Pressure (mean (sd)) | 74.1 (9.6) |
| Total Cholesterol (mean (sd)) | 200.3 (37.7) |
| Body Mass Index (mean (sd)) | 28.7 (6.1) |
| Waist-Hip Ratio (mean (sd)) | 0.86 (0.10) |
| MMSE (mean (sd), median) | 29 (.9), 30 |
| AVLT Total (mean (sd)) | 51.1 (8.4) |
| Logical Memory Story Recall Delayed (mean (sd)) | 26.2 (6.9) |
| Digit Symbol Coding | 57.5 (10.2) |
Abbreviations: APOE Risk Score: a summative odds ratio of all APOE alleles (Darst et al., 2017); WRAT-3 –Wide Range Achievement Test (Wilkinson, 1984); CES-D–Center for Epidemiology Scale for Depression. MMSE: Mini-Mental State Examination (Folstein et al., 1975); AVLT: Rey-Auditory-Verbal Learning Test (Schmidt et al. 1996).
*The Wave 2 visit is “baseline” for cognition in these analyses as it was the first visit at which the analyzed composites could be calculated.