Gothenburg Empowerment Scale (GES): psychometric properties and measurement invariance in adults with congenital heart disease from Belgium, Norway and South Korea

Table 3 Model fit indexes of multi-group confirmatory factor analyses

Model	X² (df)	CFI	RMSEA	SRMR	∆X² (∆df)	∆CFI	∆RMSEA	∆SRMR
*Complete sample (Belgium, Norway and South Korea)*
Configural invariance ^a	772.074 (255)	0.899	0.085	0.063
Configural invariance ^b	695.911 (252)	0.913	0.079	0.061
Metric invariance ^b	750.492 (280)	0.908	0.077	0.067	54.581 (28)	0.005	0.002	0.006
Scalar invariance ^b	941.720 (298)	0.874	0.087	0.074	191.228 (18)	0.034	0.010	0.007
Partial scalar invariance with intercept of item 9 free ^b	886.943 (296)	0.885	0.084	0.072
Partial scalar invariance with intercept of items 9 and 4 free ^b	856.568 (294)	0.890	0.082	0.070
Partial scalar invariance with intercept of items 9, 4 and 12 free ^b	827.343 (292)	0.896	0.080	0.069
Partial scalar invariance with intercept of items 9, 4, 12 and 2 free ^b	813.205 (290)	0.898	0.080	0.069
*Partial sample (Belgium and Norway)*
Configural invariance ^a	463.510 (170)	0.928	0.074	0.057
Metric invariance ^a	482.543 (184)	0.927	0.071	0.061	19.032 (14)	0.001	0.002	0.004
Scalar invariance ^a	544.309 (193)	0.914	0.075	0.064	61.767 (9)	0.013	0.004	0.002
Partial scalar invariance with one intercept free ^c	519.177 (192)	0.920	0.073	0.063	36.635 (8)	0.007	0.002	0.001

^a Model without error correlation; ^b Model with error correlation between items 6 and 15. Models were considered to have acceptable fit if CFI > 0.90, RMSEA and SRMR values < 0.08. MGCFA needed also to have it indexes changes within these ranges: ΔCFI < 0.010, ΔRMSEA < 0.015, and ΔSRMR < 0.030

ISSN: 1477-7525