In search of the optimum structural model for Internet Gaming Disorder

BMC Psychiatry

Table 2 CFA, LCA and FMMA: model comparisons and fit indices

No. of classes (c)/factors (f)	LL	No. of parameters	BIC	p for LMR	Entropy
Confirmatory factor analysis
One-factor	− 8789	27	17,757
Latent class analysis
One-class	−10,067	18	20,254
Two-class	− 9175	28	18,536	0.0000	0.903
Three-class	− 8795	38	17,842	0.0482	0.953
Four-class	− 8242	48	16,801	0. 2489	1.000
Factor mixture model
Two-class/one-factor
FMMA-1	−9175	28	18,536	0.0000	0.803
FMMA-2	− 8750	30	17,698	0.0104	0.636
FMMA-3	− 8533	38	17,317	0.0000	0.984
FMMA-4	− 8509	48	17,336	0.0000	0.977
Three-class/one-factor
FMMA-1	− 8809	31	17,824	0.0000	0.951
FMMA-2	− 8719	33	17,657	0. 1422	0.983
FMMA-3	− 8481	49	17,286	0. 2349	0.964
FMMA-4	− 8400	68	17,249	0. 1223	0.948

ISSN: 1471-244X