Table 2.
Participant baseline demographics and clinical characteristics (N=30).
| Variable | Total | Mild cognitive impairment (n=15) | Healthy controls (n=15) | P value | |
| Age at baseline (years), mean (SD) | 73.5 (5.4) | 74.3 (6.0) | 72.8 (4.9) | .46 | |
| Sex (male), n (%) | 28 (93) | 14 (93) | 14 (93) | N/Aa | |
| Race (white), n (%) | 30 (100) | 15 (100) | 15 (100) | N/A | |
| Education (years), mean (SD) | 14.9 (2.0) | 14.9 (2.3) | 15.0 (1.9) | .86 | |
| Montreal Cognitive Assessment [29], mean (SD) | 24.5 (2.3) | 22.9 (1.8) | 26.1 (1.5) | <.001 | |
| Geriatric Depression Scale [27], mean (SD) | 1.3 (1.3) | 1.5 (1.5) | 1.1 (1.1) | .42 | |
| Generalized anxiety disorder [28], mean (SD) | 1.3 (1.6) | 1.7 (1.7) | 0.9 (1.4) | .16 | |
| Functional Activities Questionnaire [31], mean (SD) | 1.0 (1.6) | 1.6 (1.8) | 0.4 (1.1) | .04 | |
| Modified Cumulative Illness Rating Scale [33,34], mean (SD) | 23.1 (2.9) | 24.0 (3.3) | 22.1 (2.2) | .08 | |
| Pittsburg Sleep Quality Index [44], mean (SD) | 5.7 (3.2) | 6.5 (3.7) | 5.0 (2.4) | .21 | |
| Everyday Cognition Questionnaire (ECog) informant [18,46,47], mean (SD) | 1.3 (0.3) | 1.3 (0.4) | 1.2 (0.3) | .39 | |
| ECog participant [18,46,47], mean (SD) | 1.4 (0.5) | 1.5 (0.7) | 1.3 (0.2) | .17 | |
| Physical Activity Scale for the Elderly [43], mean (SD) | 157.8 (57.9) | 172.3 (66.5) | 143.3 (45.5) | .18 | |
| Health comorbidities (positive for the condition), n (%) | |||||
|
|
Atrial fibrillation | 4 (13) | 4 (27) | 0 (0) | .03 |
|
|
Diabetes | 5 (17) | 2 (13) | 3 (20) | .62 |
|
|
Hypertension | 19 (63) | 12 (80) | 7 (47) | .06 |
|
|
Hypercholesterolemia | 24 (80) | 13 (87) | 11 (73) | .36 |
|
|
Sleep apnea | 17 (57) | 9 (60) | 8 (53) | .71 |
aN/A: not applicable.