TABLE 3.

Goodness-of-fit indices of the models (N = 274).

Model	Fit indices
	S-B χ2	df	Scaling correction	CFI	TLI	RMSEA [90% CI]	SRMR
(1) 1-Factor	374.7**	35	1.558	0.712	0.630	0.188 [0.171–0.206]	0.128
(2) 2-Factor	101.7**	36	1.340	0.944	0.930	0.082 [0.063–0.101]	0.146
(3) Bifactor	47.6*	28	1.327	0.983	0.973	0.051 [0.024–0.075]	0.058
Model comparison	Δχ2	df	p	ΔCFI	Conclusion
1 vs. 2	71.1	1	<0.001	0.232	Prefer 2
2 vs. 3	52.8	8	<0.001	0.039	Prefer 3

The conclusion in the model comparison section is based on a joint consideration of Δχ² and ΔCFI. Chi-square statistics were estimated with the robust maximum likelihood (MLR) estimator and Δχ² was calculated with the scale-adjusted chi-square difference test (http://www.thestatisticalmind.com/calculators/SBChiSquareDifferenceTest.htm, accessed 2021-09-06). df, degrees of freedom; RMSEA, root mean square error of approximation; SRMR, standardized root mean square residual; TLI, Tucker–Lewis Index; CFI, comparative fit index; CI, confidence interval. *p < 0.05, **p < 0.001.