Table 3.
Multi-Phase Growth Models for Life Satisfaction over Chronological Age and Distance-to-Death.
| Life satisfaction |
||||
|---|---|---|---|---|
| Chronological age |
Distance-to-death |
|||
| Parameter | Estimate | SE | Estimate | SE |
| Fixed effects estimates | ||||
| Intercept1, a00 | 44.67 *** | (0.53) | 48.14 *** | (0.42) |
| Change point, k | 81.23 *** | (0.39) | 4.19 *** | (0.17) |
| Slope 12, a01 | − 0.47 *** | (0.11) | −0.64 *** | (0.06) |
| Slope 22, a02 | − 0.56 *** | (0.06) | − 1.94 *** | (0.15) |
| Random effects estimates | ||||
| Variance intercept | 181.23 *** | (12.08) | 128.60 *** | (7.02) |
| Variance slope 1 | 2.11 *** | (0.43) | 0.78 *** | (0.14) |
| Variance slope 2 | 1.38 *** | (0.18) | 9.11 *** | (1.20) |
| Cov. intercept, slope 1 | − 10.67 *** | (2.08) | 6.58 *** | (0.88) |
| Cov. intercept, slope 2 | 9.45 *** | (1.25) | − 7.01 ** | (2.04) |
| Cov. slope 1, slope 2 | − 0.61 * | (0.26) | − 0.16 | (0.32) |
| Residual variance | 103.98 *** | (1.71) | 97.49 *** | (1.66) |
| Number parameters | 11 | 11 | ||
| −2LL | 79,895 | 79,423 | ||
| AIC | 79,917 | 79,445 | ||
Note. Unstandardized estimates and standard errors are presented.
1
Intercept is centered at the change point in both models;
2
Slope or rate of change in T-units per year. N = 1,637 who provided 10,162 observations. Scores standardized to a T metric (mean = 50; SD = 10) using the entire SOEP longitudinal sample as the reference frame (mean = 7.02, SD = 1.55, see Lucas et al., 2003). AIC = Akaike Information Criterion; −2LL = −2 Log Likelihood, relative model fit statistics. Cov. = Covariance.
*
p < .05,
**
p < .01,
***
p < .001.