Table 2.
Initial and Longitudinal Correlates of Strategy Clustering: Results from the ACTIVE Control Group (N=698)
| HVLT Clustering Scores | AVLT Clustering Scores | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Semantic | Subjective | Serial | Subjective | Serial | |||||||
| Estimate | 95% CI | Estimate | 95% CI | Estimate | 95% CI | Estimate | 95% CI | Estimate | 95% CI | ||
| Initial Status Predictors | |||||||||||
| Age | −0.34 * | (−0.45, −0.24) | −0.19 * | (−0.31, −0.08) | −0.02 | (−0.15, 0.11) | −0.36 * | (−0.47, −0.25) | −0.30 * | (−0.42, −0.19) | |
| Sex (1=Female) | 0.41 * | (0.26, 0.56) | 0.24 * | (0.08, 0.39) | 0.08 | (−0.08, 0.25) | 0.39 * | (0.24, 0.54) | 0.36 * | (0.20, 0.51) | |
| Ethnicity (1=White) | 0.43 * | (0.28, 0.58) | 0.32 * | (0.16, 0.47) | −0.05 | (−0.21, 0.12) | 0.36 * | (0.22, 0.51) | 0.38 * | (0.23, 0.54) | |
| Self-rated Health Status | 0.14 * | (0.00, 0.29) | 0.08 | (−0.07, 0.23) | −0.11 | (−0.26, 0.05) | 0.19 * | (0.04, 0.33) | 0.20 * | (0.04, 0.35) | |
| Education | 0.09 * | (0.06, 0.11) | 0.08 * | (0.05, 0.10) | 0.02 | (−0.01, 0.04) | 0.06 * | (0.04, 0.09) | 0.08 * | (0.05, 0.10) | |
| Adjusted R^2 | 0.33 | 0.32 | 0.05 | 0.34 | 0.33 | ||||||
| Trajectory Predictors | |||||||||||
| Age | −0.02 | (−0.05, 0.01) | −0.06 * | (−0.10, −0.02) | −0.03 | (−0.07, 0.02) | −0.04 * | (−0.07, 0.00) | −0.05 * | (−0.08, −0.01) | |
| Sex (1=Female) | 0.00 | (−0.04, 0.05) | 0.00 | (−0.05, 0.06) | −0.08 * | (−0.14, −0.02) | 0.01 | (−0.04, 0.05) | 0.01 | (−0.04, 0.06) | |
| Ethnicity (1=White) | 0.00 | (−0.05, 0.04) | 0.04 | (−0.02, 0.09) | −0.07 * | (−0.13, −0.02) | −0.02 | (−0.07, 0.02) | 0.02 | (−0.03, 0.06) | |
| Self-rated Health Status | 0.00 | (−0.04, 0.04) | 0.00 | (−0.05, 0.05) | 0.03 | (−0.03, 0.08) | 0.04 | (−0.01, 0.08) | 0.02 | (−0.03, 0.06) | |
| Education | 0.00 | (0.00, 0.01) | 0.00 | (−0.01, 0.01) | −0.01 | (−0.02, 0.00) | 0.00 | (−0.01, 0.01) | 0.00 | (−0.01, 0.00) | |
| Residual variances | |||||||||||
| Intercept | 0.36 * | (0.30, 0.42) | 0.2 * | (0.14, 0.25) | 0.11 * | (0.07, 0.14) | 0.30 * | (0.24, 0.35) | 0.31 * | (0.24, 0.37) | |
| Pre-post slope | 0.10 * | (0.05, 0.14) | 0.10 * | (0.05, 0.15) | 0.05 * | (0.01, 0.09) | 0.05 * | (0.02, 0.08) | 0.04 * | (0.01, 0.08) | |
| Post-fifth year slope | @0 | @0 | @0 | @0 | @0 | ||||||
| Observed indicators | 0.53 * | (0.51, 0.56) | 0.80 * | (0.76, 0.83) | 1.07 * | (1.04, 1.11) | 0.66 * | (0.63, 0.69) | 0.71 * | (0.68, 0.74) | |
| Model fit statistics | |||||||||||
| CFI | 0.917 | 0.922 | 0.914 | 0.933 | 0.927 | ||||||
| RMSEA (90% CI) | 0.063 | (0.060, 0.066) | 0.058 | (0.054, 0.061) | 0.057 | (0.053, 0.060) | 0.055 | (0.051, 0.058) | 0.056 | (0.053, 0.060) | |
| SRMR | 0.062 | 0.058 | 0.081 | 0.063 | 0.07 | ||||||
*
p < 0.05
Legend. Results from two-group latent growth curve models of standardized strategy clustering scores with piecewise linear growth in the ACTIVE control group. Linear regressions of intercepts (initial status) and linear slopes (trajectories) on demographic characteristics are displayed. Coefficients of determination (R2) are shown for initial levels of strategy clustering scores. Residual variances of indicators for each wave were constrained to be equal across time. 95% CI: 95% Confidence interval.