Table 5. Odds of Current Driving in Women with Mild Cognitive Impairment (MCI) or Probable Dementia Adjusted for Age, Race, Education, and Depressive Symptomatology Using Multiple Logistic Regression with Backward Elimination.
MCI, n = 178 |
Probable Dementia, n = 207 |
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Model | aOR (95% CI) | P-Value | aOR (95% CI) | P-Value |
1: Dementia Questionnaire items | ||||
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Remembering names | – | – | 0.49 (0.22–1.08) | .08 |
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Finding way on familiar streets | 0.42 (0.11–1.55) | .19 | 0.50 (0.23–1.12) | .09 |
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Household tasks | 0.32 (0.12–0.85) | .02 | – | – |
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Handling money | – | – | 0.34 (0.13–0.86) | .02 |
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Grasping situations | 0.30 (0.12–0.80) | .02 | – | – |
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Dressing or caring for self | 0.06 (0.01–0.67) | .02 | – | – |
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Bathing | 0.44 (0.13–1.50) | .19 | 0.44 (0.16–1.18) | .10 |
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Medications for memory problems | 0.12 (0.03–0.53) | .004 | 0.32 (0.14–0.74) | .008 |
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2: Cognitive tests | ||||
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Modified Telephone Interview for Cognitive Status | – | – | 1.14 (1.03–1.26) | .01 |
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East Boston Memory Test | ||||
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Immediate recall | 0.88 (0.74–1.04) | .14 | – | – |
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Long delay | – | – | 1.07 (0.97–1.17) | .19 |
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Trail-Making Test Part A, secondsa | – | – | 1.08 (0.98–1.19) | .11 |
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Animal fluency | – | – | 1.07 (0.98–1.17) | .12 |
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Digit Span forward | – | – | 0.84 (0.73–0.97) | .02 |
aOR = adjusted odds ratio; CI = confidence interval.
All variables with P < .25 from Table 4 were entered as covariates into an initial model, then covariates with the highest P-values were eliminated sequentially until all of the remaining covariates had P < .20; age, race, education, and depression score were forced to remain in all models.
Scores were subtracted from 0 so that higher score indicate better performance.