Table 2.

Comparison among the internal structures of the Tampa Scale for Kinesiophobia (n = 335)

Structures	Chi-square/DF	CFI	TLI	RMSEA (90% CI)	AIC	BIC
Structure 1	6.28	0.687	0.642	0.126 (0.117, 0.135)	15,762.366	15,892.046
Structure 2	4.98	0.846	0.807	0.109 (0.095, 0.124)	10,260.713	10,274.837
Structure 3	4.25	0.877	0.843	0.099 (0.084, 0.114)	10,232.692	10,320.417
Structure 4	2.75	0.950	0.931	0.072 (0.053, 0.093)	8351.278	8423.747

Structure 1: 1 domain and all 17 items; Structure 2: 1 domain and 11 items (1, 2, 3, 5, 6, 7, 10, 11, 13, 15 and 17); Structure 3: 2 domains and 11 items (domain 1: items 1, 2, 10, 13, 15 and 17; domain 2: items 3, 5, 6, 7 and 11); Structure 4: 2 domains and 9 items (domain 1: items 1, 10, 13 and 17; domain 2: items 3, 5, 6, 7 and 11)

DF degree of freedom: CFI comparative fit index: TLI Tucker-Lewis index: RMSEA root mean square error of approximation: CI confidence interval: AIC Akaike information criterion: BIC Bayesian information criterion