Table 4.
Associations Between Strategy Clustering, Memory, and Everyday Functional Ability by Intervention Group: Results from ACTIVE (N=1,401)
| Clustering score mediator |
Outcome | Regressions of strategy clustering trajectories on training (Path A) |
Regressions of outcome trajectories on strategy clustering trajectories (Path B) |
Regressions of outcome trajectories on training (Path C) |
Mediated path (A*B) | ||||
|---|---|---|---|---|---|---|---|---|---|
| β | 95% CI | β | 95% CI | β | 95% CI | Product | 95% CI | ||
| HVLT Semantic | Functioning | 0.61 * | (0.51, 0.71) | 0.36 * | (0.11, 0.61) | −0.21 | (−0.40, −0.02) | 0.22 * | (0.06, 0.38) |
| Memory | 0.41 * | (0.19, 0.62) | −0.25 | (−0.45, −0.05) | 0.25 * | (0.11, 0.39) | |||
| HVLT Subjective | Functioning | 0.31 * | (0.19, 0.43) | 0.41 * | (0.09, 0.73) | 0.00 | (−0.17, 0.17) | 0.13 * | (0.02, 0.24) |
| Memory | 0.49 * | (0.19, 0.79) | −0.02 | (−0.25, 0.20) | 0.15 * | (0.04, 0.26) | |||
| HVLT Serial | Functioning | −0.13 | (−0.27, 0.01) | 2.11 | (−0.08, 4.30) | −0.31 | (−1.14, 0.52) | −0.28 | (−0.69, 0.12) |
| Memory | 2.29 * | (0.20, 4.37) | −0.37 | (−1.27, 0.53) | −0.31 | (−0.72, 0.11) | |||
| AVLT Subjective | Functioning | 0.27 * | (0.17, 0.38) | 0.77 * | (0.26, 1.29) | 0.03 | (−0.21, 0.27) | 0.21 * | (0.05, 0.37) |
| Memory | 0.82 * | (0.42, 1.22) | 0.01 | (−0.26, 0.28) | 0.22 * | (0.08, 0.36) | |||
| AVLT Serial | Functioning | 0.27 * | (0.16, 0.38) | 0.74 * | (0.11, 1.36) | −0.14 | (−0.39, 0.11) | 0.20 * | (0.01, 0.39) |
| Memory | 0.82 * | (0.25, 1.38) | −0.19 | (−0.47, 0.10) | 0.22 * | (0.04, 0.40) | |||
Legend. Results from two-group parallel process latent growth curve models of standardized clustering scores with piecewise linear growth and composite memory growth processes. Models are adjusted for age, sex, ethnicity, self-rated health status, and education. 95% CI: 95% Confidence interval.