Table 4.

Fit indices including root mean square error of approximation (RMSEA) with lower and higher bounds of 95% confidence interval (CI), comparative fit index (CFI) and Tucker–Lewis index (TLI) obtained via confirmatory factory analysis [32] to validate the principal component analysis’ [27] factor solution

	RMSEA* (95% CI)	CFI**	TLI***
Fit index	0.063 (0.048–0.077)	0.916	0.901
Level of acceptance [38; 39]	< 0.08	> 0.90	> 0.90

Reference levels of acceptance are provided [38, 39]

*Root mean square error of approximation

**Comparative fit index

***Tucker–Lewis index