Table 3.
Goodness-of-fit indices for the five tested models of the BSI-18.
| Model | WLSMVχ2 | df | Δχ2 | Δdf | TLI | CFI | RMSEA (90% CI) | AIC | BIC | ΔBIC |
|---|---|---|---|---|---|---|---|---|---|---|
| Single-factor | 2678.274∗ | 135 | – | – | 0.949 | 0.955 | 0.089 (0.086, 0.092) | 56378.054 | 56896.955 | – |
| Three-factor | 1631.443∗ | 132 | 1046.831 | 3 | 0.969 | 0.973 | 0.069 (0.066, 0.072) | 55674.591 | 56210.789 | 686.166 |
| Four-factor | 1538.652∗ | 129 | 92.791 | 3 | 0.970 | 0.975 | 0.068 (0.065, 0.071) | 55559.49 | 56112.984 | 97.805 |
| Three-factor bi-factor | 957.934∗ | 117 | 580.718 | 12 | 0.980 | 0.985 | 0.055 (0.052, 0.058) | 55181.919 | 55923.251 | 189.733 |
| Four factor bi-factor | 968.816∗ | 117 | 10.882 | 0 | 0.980 | 0.985 | 0.056 (0.052, 0.059) | 55195.282 | 55967.684 | 44.433 |
WLSMV, weighted least squares with mean and variance adjustment; df, degrees of freedom; TLI, Tucker-Lewis Index; CFI, comparative fit index; Δχ2, change in χ2 relative to the preceding model; Δdf, change in degrees of freedom relative to the preceding model; ΔCFI, change in comparative fit index relative to the preceding model; ΔTLI, change in Tucker-Lewis Index relative to the preceding model; RMSEA, root-mean-square error of approximation; AIC, Akaike Information Criterion; ΔAIC, change in Akaike information criterion relative to the preceding model; BIC, Bayesian information criterion; ΔBIC, change in Bayesian information criterion relative to the preceding model. ∗p < 0.05. The best fitting model was in bold.