Table 1.
Comparison of unconditional models: Assessing sensitivity to the MAR assumption
| LCM | SPMM | Parameter Sensitivity | ||||
|---|---|---|---|---|---|---|
|
| ||||||
| Estimate | SE | Estimate | SE | % Change | CSK | |
| Fixed Effects | ||||||
| Intercept | 71.37*** | .37 | 71.60*** | .37 | .32 | −62.13 |
| Slope (Time-Logged) | −7.81*** | .23 | −8.33*** | .24 | 6.66 | 226.09 |
|
| ||||||
| Variance Components | ||||||
| Intercept Variance | 445.05*** | 9.47 | 445.09*** | 9.45 | .01 | −.42 |
| Slope Variance | 80.13*** | 2.76 | 78.97*** | 2.70 | 1.45 | 42.03 |
| Covariance | −61.33*** | 4.34 | −61.10*** | 4.31 | .38 | −5.30 |
p<.001
Note. Residual variances not tabled. Values range from 74.80 at baseline to 155.66 at last time point for the LCM and from 76.27 at baseline to 155.47 at last time point for the SPMM. MAR: Missing at random; CSK: Collins-Schafer-Kam index of model sensitivity; LCM: Latent curve model; SPMM: Shared parameter mixture model.