Table 1.
Baseline Characteristics Stratified by ApoE4 Carrier Status
| Variables | All participants | Non-ApoE4 carriers | ApoE4 carriers | |
|---|---|---|---|---|
| (n = 56) | (n = 36) | (n = 20) | p value | |
| Female, n (%) | 24 (42.9) | 16 (44.4) | 8 (40.0) | .747† |
| Age, mean (SD) | 73.8 (6.7) | 74.9 (7.2) | 71.9 (5.1) | .096‡ |
| Number of years of education, mean (SD) | 13.8 (2.7) | 14.3 (2.6) | 12.9 (2.7) | .064‡ |
| Body mass index, mean (SD) | 26.6 (4.4) | 26.7 (4.3) | 26.4 (4.6) | .788‡ |
| Number of medications, mean (SD) | 7.3 (4.1) | 6.8 (3.6) | 8.1 (5.0) | .277‡ |
| Number of comorbidities, mean (SD) | 6.2 (2.6) | 6.5 (2.4) | 5.8 (3.0) | .307‡ |
| Hypertension, n (%) | 32 (57.1) | 21 (58.3) | 11 (55.0) | .809† |
| Diabetes mellitus, n (%) | 8 (14.3) | 6 (16.7) | 2 (10.0) | .495† |
| Osteoporosis, n (%) | 6 (10.7) | 4 (11.1) | 2 (10.0) | .898† |
| Fall within the past year, n (%) | 18 (32.1) | 13 (36.1) | 5 (25.0) | .394† |
| Fear of falling, n (%) | 6 (10.7) | 2 (5.6) | 4 (20.0) | .094† |
| MMSE, mean (SD) | 28.2 (2.1) | 28.4 (1.8) | 27.9 (2.5) | .372‡ |
| MoCA, mean (SD) | 25.1 (3.3) | 25.2 (3.3) | 25.0 (3.5) | .796‡ |
| Gait velocity, cm/s, mean (SD) | 110.3 (22.3) | 108.5 (23.2) | 103.5 (20.8) | .421‡ |
| Gait stride time, ms, mean (SD) | 1148.3 (103.2) | 1151.3 (107.1) | 1143.0 (98.3) | .776‡ |
| Gait stride time variability, (CoV)% | 2.6 (1.6) | 2.7 (1.8) | 2.6 (1.31) | .871‡ |
| Gait stride length, cm, mean (SD) | 126.2 (20.5) | 124.8 (22.0) | 128.7 (17.9) | .498‡ |
| Gait stride length variability, (CoV)% | 3.1 (2.1) | 3.2 (2.2) | 3.0 (2.1) | .735‡ |
Notes: CoV = coefficient of variation; MMSE = mini-mental state examination; MoCA = Montreal cognitive assessment; SD = standard deviation.
†Chi-square test.
‡ t-test.