TABLE 1.
Characteristics of study participants as a function of initial classification.
| Study groups |
Effect size1 | ||
| Normal cognition | Impaired cognition | ||
| Number | 121 | 93 | |
| Age | 65.6 (8.0) | 62.8 (9.7) | 0.03* |
| Education | 16.0 (3.1) | 13.9 (2.8) | 0.13* |
| Sex [Percent (N) Male] | 30.6 (37) | 30.4 (32) | 0.04 |
| Race [Percent (N) Caucasian] | 59.5 (72) | 34.4 (32) | 0.29* |
| Handedness [Percent (N) Right] | 95.7 (112) | 90.0 (81) | 0.11* |
| APOE*4 Present [Percent(N)] | 26.1 (29) | 34.9 (30) | 0.10 |
| Montreal Cognitive Assessment | 26.5 (2.3) | 23.4 (2.7) | 0.44* |
| Wide Range Achievement Test – 4 | 63.8 (5.1) | 59.1 (7.8) | 0.18* |
| Walk Endurance – 2min distance | 544.4 (177.2) | 502.1 (87.0) | 0.02 |
| Gait Speed – 4meter walk – time | 3.4 (0.5) | 3.4 (0.7) | 0.001 |
| Oral reading | 6.9 (3.6) | 4.6 (2.8_ | 0.12* |
| DCCS | 29.3 (1.0) | 28.2 (2.0) | 0.13* |
| Flanker Inhibitory Control | 19.9 (0.8) | 19.9 (0.6) | 0.00 |
| Pattern Comparison | 41.7 (6.3) | 38.5 (7.6) | 0.05* |
| Picture Sequence Memory | 11.7 (6.8) | 7.3 (4.7) | 0.14* |
| Crystalized Cognition | 113.5 (9.3) | 105.0 (9.1) | 0.21 |
| Fluid Cognition | 97.5 (9.1) | 88.4 (9.2) | 0.25* |
| Total Cognition | 105.8 (8.8) | 95.4 (7.4) | 0.40* |
| Promis Abilities | 30.8 (7.2) | 28.1 (8.0) | 0.03* |
| Promis Concerns | 16.1 (7.3) | 17.0 (7.5) | 0.004 |
| Life Satisfaction | 19.9 (7.4) | 20.1 (10.7) | 0.000 |
| Meaning | 29.2 (15.3) | 30.1 (14.7) | 0.001 |
| Positive Affect | 18.8 (13.1) | 21.2 (15.6) | 0.01 |
| Sadness | 8.9 (2.4) | 9.2 (2.2) | 0.004 |
| Self-Efficacy | 19.6 (9.4) | 18.5 (9.7) | 0.003 |
1Cramer’s V for categorical data; Cohen’s f2 for continuous data. ∗p < 0.05.