Table 3.
Overall regression model effects for the six cognitive outcome measures
| Age (years) | Education (years) | Time | Group | Group × Time | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test variable | Wald χ2 (df) | p | Wald χ2 (df) | p | Wald χ2 (df) | p | Wald χ2 (df) | p | Wald χ2 (df) | p |
| MMSE | 5.4* (1) | .02 | 30.1** (1) | < .01 | 11.4** (1) | < .01 | 16.2** (2) | < .01 | 12.1** (2) | < .01 |
| Animal fluency | 20.3** (1) | < .01 | 39.4** (1) | <.01 | 24.4** (1) | < .01 | 21.3** (2) | < .01 | 22.3** (2) | < .01 |
| CERAD WLR Trial 3 | 30.1** (1) | < .01 | 7.2** (1) | .01 | 2.6 (1) | .11 | 31.9** (2) | < .01 | 8.0* (2) | .02 |
| WAIS-R Digit Symbol | 37.6** (1) | < .01 | 36.3** (1) | < .01 | 5.1* (1) | .02 | 13.4** (2) | < .01 | 8.5* (2) | .01 |
| Hooper VOT | 32.2** (1) | < .01 | 3.5 (1) | .06 | 3.8 (1) | .05 | 1.6 (2) | .44 | 4.2 (2) | .12 |
| Trails B | 23.9** (1) | < .01 | 13.1** (1) | < .01 | 7.7** (1) | .01 | 24.8** (2) | < .01 | 4.6 (2) | .10 |
Note. MMSE = Mini-Mental Status Examination; CERAD = Consortium to Establish a Registry for Alzheimer's disease; WLR = Word List Recall; WAIS-R = Wechsler Adult Intelligence Scale-Revised; VOT = Visual Organization Test.
= p < .05.
= p < .01.