Table 4.
Estimates for the full longitudinal model of prompted vs. unprompted OTDL performance by cognitive group.
| Estimate | S.E. | df | F-statistic | p | β | |
|---|---|---|---|---|---|---|
|
|
||||||
| Level 2 (Between Subjects Effects) | ||||||
| Replicate | - | - | 2546.705 | 2.407 | 0.035 | - |
| Site | - | - | 2551.485 | 19.891 | <.001 | - |
| Intervention Group | - | - | 2546.511 | 2.438 | 0.024 | - |
| Memory | −0.334 | 0.179 | 2610.429 | - | 0.063 | −0.073 |
| Reasoning | −0.206 | 0.181 | 2672.474 | - | 0.256 | −0.045 |
| Speed | −0.484 | 0.178 | 2585.594 | - | 0.007 | −0.106 |
| Memory+Booster | −0.089 | 0.170 | 2511.637 | - | 0.602 | −0.019 |
| Reasoning+Booster | 0.078 | 0.170 | 2464.398 | - | 0.645 | 0.017 |
| Speed+Booster | −0.376 | 0.170 | 2502.736 | - | 0.027 | −0.082 |
| Control | - | - | - | - | - | - |
| BL Age | −0.176 | 0.010 | 2622.337 | 335.747 | <.001 | −0.228 |
| BL Education | 0.427 | 0.021 | 2616.598 | 418.882 | <.001 | 0.253 |
| African American | −1.327 | 0.141 | 2583.147 | 88.037 | <.001 | −0.128 |
| Female | 0.531 | 0.124 | 2584.339 | 18.373 | <.001 | 0.050 |
| BL Vision | 0.026 | 0.005 | 2588.524 | 28.208 | <.001 | 0.066 |
| BL CES-D | −0.043 | 0.011 | 2599.200 | 15.029 | <.001 | −0.048 |
| BL SF-36 General Health | 0.008 | 0.003 | 2593.658 | 6.826 | 0.009 | 0.032 |
| Cognitive Group (CG) | - | - | 2678.581 | 224.964 | <.001 | - |
| Amnestic | −3.157 | 0.200 | 2864.490 | - | <.001 | −0.692 |
| Non-Amnestic | −2.255 | 0.131 | 2209.562 | - | <.001 | −0.494 |
| Unimpaired | - | - | - | - | - | - |
| Intercept | 21.101 | 0.984 | 2618.119 | 468.263 | <.001 | −0.261 |
| Level 1 (Within Subjects Effects) | ||||||
| Prompting Status | 3.325 | 0.035 | 9147.098 | 8824.916 | <.001 | 0.365 |
| 1st Linear Slope | 0.357 | 0.026 | 2180.600 | 183.829 | <.001 | 0.090 |
| 2nd Linear Slope | −0.175 | 0.018 | 1036.614 | 91.883 | <.001 | −0.099 |
| Prompting x 1st Linear | −0.282 | 0.037 | 10254.728 | 57.796 | <.001 | −0.036 |
| Prompting x 2nd Linear | 0.245 | 0.023 | 12041.151 | 115.411 | <.001 | 0.069 |
| Prompting x CG | 0.412 | 0.066 | 10059.340 | 38.970 | <.001 | 0.039 |
| CG x 1st Linear | −0.000 | 0.035 | 3653.950 | 0.000 | 0.990 | −0.000 |
| CG x 2nd Linear | −0.078 | 0.025 | 1616.315 | 9.854 | 0.002 | −0.038 |
| CG x Prompting x 1st Linear | −0.027 | 0.036 | 10264.507 | 0.543 | 0.461 | −0.007 |
| CG x Prompting x 2nd Linear | 0.049 | 0.024 | 11632.138 | 4.089 | 0.043 | 0.020 |
| Covariance Parameters | Estimate | S.E. | Wald Z | p |
|---|---|---|---|---|
|
|
||||
| Diagonal (Residual) | 7.614 | 0.120 | 63.579 | <.001 |
| AR1 Rho | 0.213 | 0.011 | 18.787 | <.001 |
| Intercept | 5.727 | 0.283 | 20.260 | <.001 |
| 1st Linear Slope | 0.534 | 0.052 | 10.178 | <.001 |
| 2nd Linear Slope | 0.181 | 0.018 | 10.169 | <.001 |
| Off-diagonal parameters | ||||
| 1st Linear, Intercept | −0.597 | 0.100 | −5.958 | <.001 |
| 2nd Linear, Intercept | 0.078 | 0.061 | 1.291 | 0.197 |
| 1st Linear, 2nd Linear | −0.137 | 0.025 | −5.479 | <.001 |
BL=Baseline occasion; Intervention Group (memory, reasoning, speed, memory+booster, reasoning+booster, speed+booster, or control); CES-D=Center for Epidemiological Studies-Depression-12 item scale; SF-36 General Health=MOS Short Form Health Survey, General Health subscale; CG=Cognitive Group (amnestic, non-amnestic, or unimpaired). AR1 Rho=average between occasion covariance.