Table 4: Goodness-of-fit indices of the tested models.

	Goodness of fit indicators							Wald Rank Rule
Model	|2	df	p	CFI	RMSEA (90%CI)	SRMR	McDonald’s ω	n columns	Rank
Unidimensional model	95.96	65	0.008	0.96	0.058 (0.031 – 0.081)	0.082	0.81	26	26	Identified
Mangelli et al. (2005) two factor model	87.14	64	0.029	0.97	0.050 (0.017 – 0.075)	0.078	0.82	27	27	Identified
Carta et al. (2014) two factor model	77.52	52	0.012	0.97	0.059 (0.028 – 0.085)	0.080	0.82	26	26	Identified
Massidda et al. (2016) three factor model	81.44	62	0.050	0.98	0.047 (0.002 – 0.073)	0.076	0.82	29	29	Identified
Threshold for fit			p > 0.05	≥ 0.90	≤ 0.08	≤ 0.09	≥ 0.90	n =	Rank