Table 4.
Univariate and bivariate latent growth curve model fit indices.
| Model descriptions | Model fit | Model comparisons | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Univariate models | χ2 (df) | p | CFI | TLI | RMSEA | AIC | BIC | Δχ2 (Δdf) | p |
| Nonlinear depressive symptom model | 8.34 (6) | .214 | .99 | .99 | .06 | 2600.90 | 2597.23 | – | – |
| Nonlinear goal-directed behavior model | 7.81 (6) | .252 | .97 | .97 | .05 | 2217.71 | 2214.03 | – | – |
| Nonlinear impulse control model | 10.37 (6) | .110 | .94 | .94 | .08 | 2270.12 | 2266.45 | – | – |
| Linear impulse control model | 14.47 (8) | .070 | .92 | .94 | .08 | 2270.23 | 2267.47 | 4.10 (2) | .129 |
| Nonlinear regulation strategies model | 22.51 (6) | .001 | .84 | .84 | .16 | 2482.16 | 2478.48 | – | – |
| Linear regulation strategies model | 27.93 (8) | .001 | .80 | .85 | .15 | 2483.57 | 2480.81 | 5.42 (2) | .067 |
| Bivariate models | |||||||||
| Depressive symptoms & goal-directed behavior | 58.97 (36) | .009 | .91 | .87 | .08 | 4793.82 | 4880.23 | – | – |
| Depressive symptoms & impulse control | 57.47 (38) | .022 | .93 | .90 | .07 | 4850.96 | 4837.17 | – | – |
| Depressive symptoms & regulation strategies | 73.34 (36) | <.001 | .89 | .83 | .10 | 5030.09 | 5015.39 | – | – |
Note. χ2 = Chi-square; df = degrees of freedom; CFI = comparative fit index; TLI = Tucker-Lewis index; RMSEA = root-mean-square error of approximation; AIC = Akaike information criteria; BIC = sample-size adjusted Bayesian information criteria; Δ = change in parameter.