Validation of the Italian version of the abbreviated expanded prostate Cancer index composite (EPIC-26) in men with prostate Cancer

Table 4 Results of the sequential process of assessing measurement invariance of the EPIC-26

Model	SB Χ²	df	p	RMSEA	CFI	TLI	SRMR	ΔCFI
Configural Invariance	1892.249	1105	.000	.044	.913	.904	.062	–
Metric Invariance	2003.830	1125	.000	.047	.903	.895	.068	- .010
Scalar Invariance	2279.990	1145	.000	.052	.875	.866	.071	- .028
Partial Scalar Invariance - Item 14	2225.603	1144	.000	.051	.881	.872	.071	- .022
Partial Scalar Invariance – Item 5	2196.445	1143	.000	.051	.884	.876	.070	- .019
Partial Scalar Invariance – Item 25	2155.922	1142	.000	.050	.888	.880	.070	- .015
Partial Scalar Invariance – Item 6	2126.187	1141	.000	.049	.891	.883	.069	- .012
Partial Scalar Invariance – Item 21	2101.490	1140	.000	.048	.894	.886	.069	- .009
Residual Variance Invariance	2232.515	1160	.000	.051	.882	.875	.078	- .012
Partial Residual Variance Invariance – Item 13	2219.857	1159	.000	.050	.883	.876	.075	- .011
Partial Residual Variance Invariance – Item 22	2167.399	1158	.000	.049	.889	.882	.072	- .005
Factor Variance Invariance	2191.584	1163	.000	.050	.887	.881	.077	- .002
Factor Covariance Invariance	2231.046	1173	.000	.050	.883	.878	.078	- .004
Factor Mean Invariance	2562.749	1178	.000	.057	.847	.841	.098	- .036
Partial Factor Mean Invariance – Urinary Incontinence	2383.217	1177	.000	.053	.867	.862	.081	- .016
Partial Factor Mean Invariance – Urinary Irritation	2291.617	1176	.000	.051	.877	.872	.078	- .006

The best fitting model for each of the seven steps of measurement invariance assessment is indicated in bold
Note: SB Satorra-Bentler Chi Square, df degree of freedom, RMSEA Root mean square error of approximation, CFI Comparative fit index, TLI Tucker-Lewis index (TLI), SRMR Standardized root mean square residual, ΔCFI Difference in CFI between models

ISSN: 1477-7525