Table 4.

Maximum likelihood estimates based on a quadratic growth model for FL scores (n=503)

Parameter	MLE (SE)	95% CI
FL Level	23.6 (2.99)	(17.7, 29.5)
FL Linear change	.173 (.116)	(−.0544, .400)
FL Acceleration	.011 (.019)	(−.0262, .0482)
Within-individual effect of SS	−.046 (.011)	(−.0676, −.0244)
Between-individual effect of SS	−.208 (.030)	(−.267, −.149)
Effect of AGE on FL Level	.254 (.039)	(.178, .330)
Covariance Coefficient
Intercept, Intercept	75.2 (5.49)
Linear, Intercept	.077 (1.10)
Linear, Linear	1.58 (.493)
Quadratic, Intercept	−.023 (.169)
Quadratic, Linear	−.196 (.075)
Quadratic, Quadratic	.038 (.013)

Notes: Tabled values are maximum likelihood estimates (MLE) with robust standard errors (SE) in parentheses. MLE's are averaged across results based on 10 imputed data sets obtained using MI with a MCMC method assuming missing data were missing at random. SE's take MI into account. The 95% CI's are estimated 95% confidence intervals for the fixed effects. Time is centered at the start of the longitudinal study. FL=functional limitation; SS=Social Support; Age=Chronological Age