Table 6.
Validation of regression formulas in entire sample
| Measure | Predicted by | Observed One-Year | Predicted One-Year | Difference | t | r | 90% CI | % -/+ |
|---|---|---|---|---|---|---|---|---|
| Same Test | ||||||||
| HVLT-R Total | HVLT-R Total | 24.5 (6.1) | 24.6 (4.0) | -0.1 (4.7) | -0.2 | 0.64 | 5.4 | 15/11 |
| HVLT-R DR | HVLT-R DR | 7.5 (3.6) | 7.5 (2.5) | 0.0 (2.5) | 0.1 | 0.70 | 3.2 | 13/6 |
| List Learning | List Learning | 26.0 (6.0) | 25.7 (4.1) | 0.3 (4.4) | 0.6 | 0.67 | 5.5 | 7/7 |
| List Recall | List Recall | 5.1 (2.6) | 5.2 (1.8) | -0.1 (1.9) | -0.6 | 0.70 | 2.2 | 12/7 |
| Story Memory | Story Memory | 16.7 (4.2) | 16.6 (2.8) | 0.1 (3.2) | 0.4 | 0.66 | 4.2 | 8/8 |
| Story Recall | Story Recall | 8.7 (2.6) | 8.3 (1.6) | 0.4 (2.1) | 2.2* | 0.62 | 1.9 | 12/22 |
| Different Test | ||||||||
| HVLT-R Total | List Learning | 24.5 (6.1) | 24.4 (3.4) | 0.1 (5.0) | 0.3 | 0.57 | 5.4 | 13/11 |
| HVLT-R Total | Story Memory | 24.5 (6.1) | 24.2 (3.5) | 0.3 (5.0) | 0.6 | 0.57 | 5.4 | 15/11 |
| HVLT-R DR | List Recall | 7.5 (3.6) | 7.6 (2.3) | -0.1 (2.7) | -0.2 | 0.65 | 3.2 | 13/7 |
| HVLT-R DR | Story Recall | 7.5 (3.6) | 7.4 (2.3) | 0.1 (2.8) | 0.4 | 0.63 | 3.2 | 13/11 |
| List Learning | HVLT-R Total | 26.0 (6.0) | 25.8 (4.1) | 0.2 (4.3) | 0.4 | 0.69 | 5.5 | 9/9 |
| List Learning | Story Memory | 26.0 (6.0) | 25.7 (3.7) | 0.2 (4.7) | 0.5 | 0.62 | 5.5 | 9/10 |
| List Recall | HVLT-R DR | 5.1 (2.6) | 5.1 (1.7) | -0.1 (1.9) | -0.3 | 0.67 | 2.2 | 11/7 |
| List Recall | Story Recall | 5.1 (2.6) | 5.1 (1.7) | 0.0 (2.0) | -0.3 | 0.64 | 2.2 | 13/12 |
| Story Memory | HVLT-R Total | 16.7 (4.2) | 16.4 (4.2) | 0.3 (3.4) | 1.0 | 0.59 | 4.2 | 12/14 |
| Story Memory | List Learning | 16.7 (4.2) | 16.5 (2.4) | 0.2 (3.5) | 0.5 | 0.56 | 4.2 | 10/11 |
| Story Recall | HVLT-R DR | 8.7 (2.6) | 9.1 (1.5) | -0.4 (2.1) | -2.3* | 0.59 | 1.9 | 25/10 |
| Story Recall | List Recall | 8.7 (2.6) | 8.4 (1.4) | 0.3 (2.2) | 1.4 | 0.53 | 1.9 | 18/21 |
| Same Test | ||||||||
| TMT-A | TMT-A | 44.0 (19.2) | 43.6 (11.8) | 0.4 (15.2) | 0.3 | 0.62 | 16.3 | 4/7 |
| TMT-B | TMT-B | 112.3 (64.4) | 112.6 (46.3) | -0.3 (44.9) | -0.1 | 0.72 | 47.9 | 6/6 |
| SDMT | SDMT | 40.1 (11.7) | 40.0 (8.4) | 0.1 (8.1) | 0.2 | 0.72 | 8.1 | 8/9 |
| Coding | Coding | 39.4 (11.1) | 39.2 (9.2) | 0.2 (6.3) | 0.4 | 0.82 | 6.8 | 8/9 |
| Different Test | ||||||||
| TMT-A | TMT-B | 44.0 (19.2) | 44.7 (11.4) | -0.6 (15.7) | -0.5 | 0.58 | 16.3 | 6/9 |
| TMT-A | SDMT | 44.0 (19.2) | 44.2 (11.4) | -0.2 (15.5) | -0.1 | 0.59 | 16.3 | 7/8 |
| TMT-A | Coding | 44.0 (19.2) | 44.0 (10.8) | 0.0 (15.9) | 0.0 | 0.56 | 16.3 | 7/6 |
| TMT-B | TMT-A | 112.3 (64.4) | 111.9 (40.1) | 0.3 (50.4) | 0.1 | 0.62 | 47.9 | 10/8 |
| TMT-B | SDMT | 112.3 (64.4) | 112.5 (41.6) | -0.2 (49.2) | 0.0 | 0.65 | 47.9 | 9/9 |
| TMT-B | Coding | 112.3 (64.4) | 112.3 (40.6) | 0.0 (50.0) | 0.0 | 0.63 | 47.9 | 8/9 |
| SDMT | TMT-A | 40.1 (11.7) | 40.0 (6.4) | 0.1 (9.8) | 0.1 | 0.55 | 8.1 | 5/15 |
| SDMT | TMT-B | 40.1 (11.7) | 40.4 (6.7) | -0.3 (9.5) | -0.3 | 0.58 | 8.1 | 14/13 |
| SDMT | Coding | 40.1 (11.7) | 40.2 (8.3) | 0.0 (8.3) | 0.0 | 0.71 | 8.1 | 10/6 |
| Coding | TMT-A | 39.4 (11.1) | 39.0 (7.4) | 0.4 (8.3) | 0.6 | 0.66 | 6.8 | 19/22 |
| Coding | TMT-B | 39.4 (11.1) | 38.8 (7.8) | 0.6 (8.0) | 0.8 | 0.69 | 6.8 | 17/11 |
| Coding | SDMT | 39.4 (11.1) | 39.7 (8.8) | -0.3 (6.8) | -0.5 | 0.79 | 6.8 | 15/11 |
| Same Test | ||||||||
| COWAT | COWAT | 39.7 (12.4) | 40.0 (8.9) | -0.2 (8.8) | -0.3 | 0.71 | 9.9 | 9/10 |
| Animals | Animals | 18.0 (6.0) | 18.1 (3.0) | 0.0 (5.2) | 0.1 | 0.51 | 6.0 | 8/7 |
| Picture Naming | Picture Naming | 9.6 (0.7) | 9.3 (0.4) | 0.4 (0.6) | 7.4* | 0.55 | 0.7 | 5/21 |
| Semantic Fluency | Semantic Fluency | 19.1 (4.9) | 19.2 (3.4) | -0.1 (3.5) | -0.3 | 0.69 | 4.4 | 10/13 |
| Different Test | ||||||||
| COWAT | Animals | 39.7 (12.4) | 39.6 (3.7) | 0.0 (12.0) | 0.0 | 0.30 | 9.9 | 19/18 |
| COWAT | Picture Naming | 39.7 (12.4) | 39.7 (2.6) | 0.0 (12.1) | 0.0 | 0.21 | 9.9 | 21/19 |
| COWAT | Semantic Fluency | 39.7 (12.4) | 39.7 (4.9) | 0.0 (11.4) | 0.0 | 0.40 | 9.9 | 19/19 |
| Animals | COWAT | 18.0 (6.0) | 18.0 (2.6) | 0.1 (5.4) | 0.1 | 0.44 | 6.0 | 12/10 |
| Animals | Picture Naming | 18.0 (6.0) | 17.9 (1.6) | 0.1 (5.7) | 0.3 | 0.27 | 6.0 | 12/12 |
| Animals | Semantic Fluency | 18.0 (6.0) | 17.9 (2.3) | 0.1 (5.5) | 0.3 | 0.38 | 6.0 | 12/8 |
| Picture Naming | COWAT | 9.6 (0.7) | 9.8 (0.2) | -0.1 (0.6) | -2.2* | 0.25 | 0.7 | 19/0 |
| Picture Naming | Animals | 9.6 (0.7) | 9.7 (0.2) | -0.1 (0.6) | -1.9 | 0.25 | 0.7 | 19/0 |
| Picture Naming | Semantic Fluency | 9.6 (0.7) | 9.8 (0.2) | -0.1 (0.6) | -2.4* | 0.25 | 0.7 | 19/0 |
| Semantic Fluency | COWAT | 19.1 (4.9) | 19.2 (2.6) | 0.0 (4.2) | -0.1 | 0.52 | 4.4 | 16/15 |
| Semantic Fluency | Animals | 19.1 (4.9) | 18.9 (2.9) | 0.2 (4.0) | 0.6 | 0.59 | 4.4 | 11/13 |
| Semantic Fluency | Picture Naming | 19.1 (4.9) | 18.9 (2.2) | 0.3 (4.4) | 0.7 | 0.44 | 4.4 | 15/20 |
Note. Observed one-year score is actual score obtained at one-year follow-up visit. Predicted one-year score is the predicted score expected at one-year follow-up visit based on equations in Tables 3 - 5. Difference is Observed minus Predicted one-year scores. t = t-value in the dependent t-test comparing Observed and Predicted one-year scores. r = Pearson correlation between Observed and Predicted one-year scores. 90% CI = 90% confidence interval of the one-year scores. %-/+ = % of participants that fall below the confidence interval and % of participants that fall above the confidence interval.