Table 3.
Model Fit
| Model | AIC | BIC | CFI | TLI | RMSEA (90% CI)1 | SRMR | χ2 | df | p | Factor loadings |
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Measurement Model | ||||||||||
| Full sample | 3801.56 | 3896.64 | .98 | .97 | .07 (.04, .11) | .04 | 35.70 | 17 | .01 | β= .72−.96, all p<.001 |
| ADHD subgroup | 2354.86 | 2436.86 | .97 | .96 | .08 (.04, .12) | .06 | 33.61 | 17 | .01 | β= .70–1.00, all p<.001 |
| Non-ADHD subgroup | 1495.01 | 1564.25 | .99 | .98 | .05 (.00, .11) | .04 | 20.95 | 17 | 0.23 | β= .70–1.00, all p<.001 |
| Full Sample Structural Model | 5895.15 | 6053.61 | .98 | .96 | .06 (.03, .08) | .04 | 56.67 | 32 | .01 | β= .72−.91, all p<.001 |
| Multigroup Model (ADHD, Non-ADHD) | ||||||||||
| Unconstrained | 5967.99 | 6284.92 | .97 | .95 | .06 (.04, .09) | .05 | 95.23 | 64 | .01 | β= .73−.90, all p<.001 |
| Constrained | 5967.45 | 6280.86 | .97 | .95 | .06 (.04, .09) | .05 | 96.68 | 65 | .01 | β= .72−.99, all p<.001 |
Note . AIC = Akaike’s Information Criteria, BIC = Bayesian Information Criteria, CFI = comparative fit index, RMSEA = root mean square error of approximation, SRMR = standardized root mean square residual, TLI = Tucker-Lewis index.
1
T-sized RMSEA values (Yuan et al., 2016) were also computed as requested during the peer review process, and are identical to the upper bound of each model’s 90% CI in the Table above. Interpretation of model fit based on T-sized RMSEA values varies according to model degrees of freedom and N; all models showed adequate (fair or close) fit based on the cutoff values recommended by Yuan et al. (2016).