Table 2.
Estimated marginal means for on-road test and driver screening tests unadjusted Mean (standard deviation)
| Variable | Cognitively Normal | MCI | p-value |
| (n = 245) | (n = 57) | ||
| Driver safety rating | 6.05 (1.51) | 5.61 (1.77) | 0.021 |
| UFOV® Score (ms) | 136.13 (130.00) | 157.54 (126.76) | 0.177 |
| Dot Motion (log deg. arc) | –1.78 (0.21) | –1.70 (0.23) | 0.006 |
| CARS-RT (ms) | 928.42 (154.64) | 964.88 (159.01) | 0.060 |
| Postural sway (mm) | 364.11 (178.91) | 377.18 (178.13) | 0.645 |
| Multi-D Risk score (%) | 19.93 (27.66) | 28.60 (29.34) | 0.021 |
| DriveSafe Score | 89.43 (0.84) | 82.29 (1.75) | <0.001 |
| DriveSafe Intersections | 6.42 (0.09) | 5.85 (0.18) | 0.004 |
| 14-Item Road Law | 31.58 (0.27) | 30.90 (0.55) | 0.262 |
| Maze Test Time (s) | 31.16 (20.09) | 27.60 (15.22) | 0.11 |
Adjusted for age and gender. The Multi-D risk score is a weighted composite of Dot Motion, CARS-RT, Postural sway, and km driven per week that reflects the probability of failing the ORT using data from a population-based study [25]. UFOV®, Useful Field of View; CARS-RT, Color Choice Reaction Time test.