Psychometric properties and validation of the English version Giessen Subjective Complaints List (GBB-8)

BMC Psychology

Table 3 Test of measurement invariance across sex and age

	χ²	df	Δχ²	Δdf	p	CFI	ΔCFI	RMSEA	ΔRMSEA
Participant sex (male, female)
Configural model	81.981	32				.985		.072
1st order weak invariance	89.422	36	7.441	4	.114	.985	0	.069	.003
2nd order weak invariance	93.273	39	3.851	3	.278	.985	0	.066	.003
1st order strong invariance	99.694	43	6.421	4	.17	.985	0	.063	.003
2nd order strong invariance	107.529	46	7.835	3	.05	.984	.001	.063	0
1st order strict invariance	117.238	54	9.709	8	.286	.984	0	.059	.004
2nd order strict invariance	126.662	58	9.424	4	.051	.982	.002	.06	− .001
Mean equivalence	128.558	59	1.896	1	.169	.982	0	.06	0
Age groups (< 30, 30–39, 40–49, > 49)
Configural model	108.741	64				.987		.068
1st order weak invariance	124.371	76	15.63	12	.209	.987	0	.062	.006
2nd order weak invariance	135.123	85	10.752	9	.293	.987	0	.059	.003
1st order strong invariance	145.451	97	10.328	12	.587	.988	− .001	.053	.006
2nd order strong invariance	153.651	106	8.2	9	.514	.988	0	.05	.003
1st order strict invariance	194.985	130	41.334	24	.015	.984	.004	.053	− .003
2nd order strict invariance	202.323	142	7.338	12	.834	.984	0	.05	.003
Mean equivalence	213.344	145	11.021	3	.012	.982	.002	.052	− .002

χ², chi square; df, degrees of freedom; Δ, change from previous model; p, significance level; CFI, Comparative Fit Index; RMSEA, root mean square error of approximation

ISSN: 2050-7283