Table 4.
Multivariate Linear Regressions Predicting Gait Speed in Single- and Dual-Task Conditions
| Gait Speed NW: R = .457; R 2 = .299; p = <.001 | Gait Speed WWC: R = .391; R 2 =. 153; p < .001 | |||||
|---|---|---|---|---|---|---|
| Variables | B | 95% CI | p | B | 95% CI | p |
| Age | −.889 | −1.261 to −.517 | <.001 | −.597 | −1.052 to −.141 | .010 |
| Gender | −.756 | −6.017 to 4.505 | .777 | 2.578 | −3.852 to 9.008 | .430 |
| Education | .488 | −.345 to 1.329 | .255 | −.119 | −1.148 to .910 | .820 |
| Comorbidity score | −2.50 | −5.09 to .097 | .059 | −.986 | −4.160 to 2.188 | .541 |
| Gait abnormalities | −14.069 | −19.475 to −8.665 | <.001 | −9.561 | −16.165 to −2.956 | .005 |
| Flanker RT (ms) | −.009 | −.32 to .013 | .426 | −.005 | −.032 to .023 | .734 |
| Flanker effect (ms) | −.009 | −.052 to .033 | .665 | −.013 | −.065 to .038 | .608 |
| Flanker COV | −.481 | −1.17 to .056 | .079 | −.901 | −1.557 to −.245 | .007 |
Notes: Flanker COV = coefficient of variation of the Flanker task using all valid trials; Flanker effect = conflict resolution defined as the difference between congruent vs incongruent trials; Flanker overall RT = average reaction time based on all valid trials; NW = normal pace walk; WWC = walking while counting.