Table 3.
Pearson product moment correlation coefficient or Spearman’s rho for mDTE, cogDTE, mAAI, and cDTE on hypothesized measures that require attentional control (task specific interference and task prioritization), hypothesized measures that require automaticity, and measures hypothesized to have no relationship with DTE-B among the PD, AD, and healthy groups. Benjamini-Hochberg corrections were applied to control for family wise error. Significant p-values after correction are marked in red.
| PD | AD | HEALTHY | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VARIABLE (STATISTIC) | mDTE | cogDTE | mAAI | cDTE | mDTE | cogDTE | mAAI | cDTE | mDTE | cogDTE | mAAI | cDTE |
| DTE-B | ||||||||||||
| mDTE (r) | X | .212 * | −.034 | .498 ** | X | .275 * | .058 | .604 ** | X | .272 * | .113 | .498 ** |
| cogDTE (r) | .212* | X | −.984 ** | 929 ** | .275 * | X | −.944 ** | .882 ** | .272* | X | −.925 ** | .951 ** |
| mAAI (r) | −.034 | −.984 ** | X | −.859 ** | .058 | −.944 ** | X | −.708 ** | .113 | −.925 ** | x | −.785 ** |
| cDTE (r) | .498 ** | .929 ** | −.859 ** | X | .604 ** | .882 ** | −.708 ** | X | .498 ** | .951 ** | −.785 ** | X |
| MEASURES THAT REQUIRE ATTENTIONAL RESOURCES | ||||||||||||
| MDS-UPDRS Part II (ρ) | −.047 | −.337 | .384 * | −.275 | ||||||||
| MDS-UPDRS Part III (ρ) | −.014 | −.189 * | .260* | −.149 | ||||||||
| MiniBESTest-Anticipatory (ρ) | .053 | .273 * | −.281 * | .239 * | .013 | .008 | −.097 | .033 | −.005 | .269* | −.229 | .230 |
| Falls in last 30 Days (r) | .061 | .033 | −.023 | .055 | .028 | −.105 | .188 | −.044 | .000 | .000 | .000 | .000 |
| Falls in last Year (r) | .094 | .060 | −.044 | .072 | −.044 | −.038 | −.024 | −.037 | −.259* | −.349 ** | .259* | −.399 ** |
| Injurious Falls (r) | .022 | −.021 | .025 | −.048 | −.081 | −.117 | .095 | −.153 | .066 | .064 | −.043 | .069 |
| mFFABQ (ρ) | −.139 | −.287 * | .303* | −.269 * | −.048 | −.120 | .168 | −.053 | .331 | .229 | −.025 | .306 |
| MEASURES THAT REQUIRE AUTOMATICITY (MINIMAL ATTENTIONAL RESOURCES) | ||||||||||||
| MiniBESTest-Reactive (ρ) | .249* | .298 ** | −.207 * | .327 ** | .169 | .099 | −.184 | .010 | .139 | .034 | −.114 | .076 |
| 6 minute walk test (r) | .189 | .281 * | −.244 * | .298 * | .124 | .352 ** | −.313 * | .347 ** | .057 | .294 * | −.282 * | .282 * |
| MEASURS HYPOTHESIZED TO HAVE NO RELATIONSHIP WITH DTE-B | ||||||||||||
| MDS-UPDRS Part I (ρ) | .117 | −.045 | .174 | .002 | ||||||||
| PHQ-9 (ρ) | −.151 | −.175 | .146 | −.166 | .125 | −.028 | .123 | .039 | ||||
=p value <.05
=p value<.001
PD – Parkinson’s disease, AD – Alzheimer’s disease, DTE-B – dual task effect battery, mDTE – motor dual task effect, cogDTE – cogntivie dual task effect, mAAI – modified attention allocation index, cDTE – combined dual task effect, MDS-UPDRS – movement disorder society – Unified Parkinson Disease Rating Scale, mFFABQ- modified Fear of Falling Avoidance Behavior Questionnaire, PHQ-9 – Patient Health Questionnaire.