Table 1.
Participant Demographic Information
| Variable | Full control group (n = 2,783) | Analytic sample (n = 311) | Longitudinal drop out vs remained | |
|---|---|---|---|---|
| M (SD) or n (%) | Range | M (SD) or n (%) | p Value | |
| Male, n (%) | 673 (24.16%) | — | 80 (25.7%) | .102 |
| White race, n (%) | 2,029 (72.83%) | — | 241 (77.5%) | .012 |
| Age, M (SD) | 73.63 (5.90) | 65–93 | 72.90 (5.44) | <.001 |
| Education, n (SD) | 13.53 (2.70) | 6–20 | 13.71 (2.59) | <.001 |
| SF-36 General Health Subscale, M (SD) | 68.23 (19.56) | 0–100 | 67.94 (19.85) | <.001 |
| SF-36 Role Physical Function Subscale, M (SD) | 57.69 (40.69) | 0–100 | 53.68 (41.55) | <.001 |
| SF-36 Physical Function Subscale, M (SD) | 66.21 (26.55) | 0–100 | 63.23 (28.02) | <.001 |
| Memory Composite, M (SD) | −0.07 (0.94) | −4.12–2.06 | −0.01 (0.93) | <.001 |
Notes: SD = standard deviation; SF-36 = 36-item Short Form.