The Bergen Facebook Addiction Scale: its psychometric properties and invariance among women with eating disorders

BMC Women's Health

Table 3 Invariance of the factor structures of the Bergen Facebook Addiction Scale across different groups

Groups	Invariance levels	χ²	df	p	Δχ²	Δdf	p(Δχ²)	CFI	ΔCFI	TLI	ΔTLI	RMSEA	ΔRMSEA	SRMR
Eating disorders	Configural	25.60	18	.109				.991		.986		.059		.0249
	Metric	30.98	23	.123	5.38	5	. 371	.991	.000	.988	− .002	.054	.005	.0313
	Strong	35.72	24	.058	4.74	1	.029	.987	.004	.983	.005	.064	− .010	.0616
	Strict	41.58	30	.078	5.86	6	.439	.987	.000	.987	− .004	.056	.008	.0706
Age	Configural	34.08	18	.012				.982		.970		.086		.0280
	Metric	44.07	23	.005	9.98	5	.076	.976	.006	.969	.001	.087	− .001	.0388
	Strong	44.08	24	.007	0.01	1	.914	.977	− .001	.971	− .002	.083	.004	.0397
	Strict	61.60	30	.001	17.52	6	.008	.964	.013	.964	.007	.093	− .010	.0621
Education	Configural	38.63	18	.003				.977		.962		.097		.0180
	Metric	42.38	23	.008	3.74	5	.587	.979	− .002	.972	− .010	.083	.014	.0184
	Strong	42.45	24	.011	0.07	1	.788	.980	− .001	.975	− .003	.080	.003	.0192
	Strict	53.31	30	.005	10.66	6	.093	.974	.006	.974	.001	.080	.000	.0196
Marital status	Configural	49.77	18	.001				.965		.942		.121		.0274
	Metric	62.37	23	.001	12.60	5	.027	.957	.008	.943	− .001	.119	.003	.0427
	Strong	63.16	24	.001	34.14	7	.373	.957	.000	.946	− .003	.117	.002	.0377
	Strict	96.51	30	.001	33.35	6	.001	.927	.030	.927	.019	.136	− .019	.0607

χ², chi-square; df, degrees of freedom; CFI, comparative fit index; TLI, Tucker–Lewis index; RMSEA, root mean square error of approximation; CI, confidence interval; SRMR, standardized root mean residual, values in boldface indicate significant non-invariance, values in boldface indicate non-invariance

ISSN: 1472-6874