Table 1. Gait and Brain Study baseline characteristics.
| Characteristic Mean (SD) Minimum, Maximum Number of missing values (if applicable) unless otherwise specified | Overalla | Normal Cognitionb | Subjective Cognitive Impairmentc | Mild Cognitive Impairmentd |
|---|---|---|---|---|
| Age (years) | 74.22 (6.33) | 73.50 (4.58) | 70.00 (4.59) | 75.36 (6.52) |
| 63.00, 92.00 | 67.00, 82.00 | 65.00, 85.00 | 63.00, 92.00 | |
| Education (years) | 13.85 (2.92) | 16.33 (3.06) | 14.42 (2.81) | 13.33 (2.74) |
| 6.00, 20.00 | 10.00, 20.00 | 10.00, 20.00 | 6.00, 20.00 | |
| Sex | ||||
| Female n (%) | 58 (53) | 7 (58) | 15 (79) | 36 (49) |
| Male | 51 | 5 | 4 | 42 |
| Medications (#) | 7.62 (4.52) | 6.42 (4.06) | 6.53 (5.26) | 8.06 (4.37) |
| 0, 21 | 2, 16 | 0, 21 | 0, 21 | |
| Comorbidities (#) | 6.06 (2.85) | 4.33 (1.44) | 4.79 (2.02) | 6.64 (2.98) |
| 0, 13 | 2, 7 | 1, 8 | 0, 13 | |
| Geriatric Depression Scale | 2.35 (2.14) | 1.60 (1.14) | 2.25 (1.89) | 2.40 (2.21) |
| 0, 10 | 0, 3 | 1, 5 | 0, 10 | |
| 22 | 7 | 15 | 0 | |
| General Physical Activity Level | ||||
| Vigorous: n (%) | 63 (58) | 6 (50) | 13 (68) | 44 (56) |
| Moderate: n (%) | 29 (27) | 5 (42) | 4 (21) | 20 (26) |
| Seldom: n (%) | 16 (25) | 1 (8) | 2 (11) | 13 (17) |
| Missing: n | 1 | 0 | 0 | 1 |
| Instrumental Activities of Daily Living | 7.69 (0.94) | 8.00 (0.00) | 7.75 (0.50) | 7.67 (0.99) |
| 2, 8 | 8, 8 | 7, 8 | 2, 8 | |
| 22 | 7 | 15 | 0 | |
| Basic Activities of Daily Living | 0.42 (0.97) | 0.80 (0.84) | 0.75 (0.96) | 0.38 (0.98) |
| 0, 5 | 0, 2 | 0, 2 | 0, 5 | |
| 22 | 7 | 15 | 0 | |
| ADAS-Cog-Proxy | 9.46 (2.34) | 7.59 (1.32) | 7.96 (1.93) | 10.11 (2.24) |
| 3, 16 | 4, 9 | 3, 12 | 5, 16 | |
| Montreal Cognitive Assessment | 24.45 (3.82) | 27.25 (1.48) | 27.89 (2.45) | 23.18 (3.60) |
| 12, 30 | 24, 30 | 21, 30 | 12, 30 | |
| Mini-Mental State Examination | 27.74 (2.52) | 28.83 (1.80) | 28.89 (1.45) | 27.29 (2.69) |
| 18, 30 | 24, 30 | 24, 30 | 18, 30 | |
| Clinical Dementia Rating Scale | 0.99 (0.89) | 0.0 (0.0) | NA | 1.07 (0.88) |
| 0.0, 4.0 | 0.0,0.0 | NA | 0.0, 4.0 | |
| 68 | 9 | 19 | 40 | |
| Rey Auditory Verbal Learning Test (3 trials) | 17.20 (5.35) | 23.40 (5.18) | 24.75 (6.65) | 16.34 (4.71) |
| 8.0, 33.0 | 19.0, 32.0 | 17.0, 33.0 | 8.0, 28.0 | |
| 29 | 7 | 15 | 7 | |
| Gait Velocity (cm/s) | 108.40 | 124.80 | 114.10 | 104.60 |
| 21.27 | 15.78 | 17.59 | 21.47 | |
| 57.27, 165.2 | 99.65, 155.80 | 82.17, 141.00 | 57.27, 165.20 | |
| 1 | 0 | 0 | 0 | |
| Stride Time (s) | 1.14 (0.10) | 1.11 (0.08) | 1.10 (0.08) | 1.16 (0.10) |
| 0.93, 1.41 | 0.95, 1.20 | 0.97.0, 1.26 | 0.93, 1.41 | |
| 1 | 0 | 1 | 0 | |
| Stride Time Coefficient of Variation (CV) (%) | 2.47 (1.48) | 2.08 (0.76) | 2.49 (2.02) | 2.53 (1.43) |
| 0.62, 9.73 | 1.14, 4.04 | 1.16, 9.73 | 0.62, 7.89 | |
| 1 | 0 | 1 | 0 | |
| Dual-Task Gait Velocity Cost with Counting (%) | 5.51 (10.68) | 3.10 (11.52) | 2.58 (5.48) | 6.55 (11.35) |
| -16.04, 34.61 | -8.16, 34.61 | -11.05, 10.82 | -16.04, 31.12 | |
| 1 | 0 | 1 | 0 | |
| Dual-Task Stride Time Cost with Serial Sevens (%) | -16.93 (18.42) | -24.06 (29.08) | -8.23 (9.87) | -17.86 (17.37) |
| -75.93, 6.30 | -75.93, 3.74 | -38.54, 2.74 | -69.50, 6.30 | |
| 3 | 0 | 1 | 2 | |
| Dual-Task Stride Time CV Cost with Naming Animals (%) | -133.40 | -214.80 | -44.54 | -141.30 |
| (270.66) | (416.11) | (80.73) | (269.59) | |
| -1382.00, 77.58 | -1382.0, 63.87 | -240.3, 53.55 | -1200.00, 77.58 | |
| 1 | 0 | 1 | 0 |
SD = Standard Deviation, NA = Not Applicable. Number of participants
a = 109
b = 12
c = 19
d = 78.