Table 4.

Measurement invariance of BWAS across four major economic districts in China based on Sample B (N = 347)

Model		χ 2	df	p	CFI	TLI	RMSEA	SRMR	△χ2	△df	△p	|△CFI|	|△RMSEA|
M1: Configural invariance	85.264		56	0.007	0.961	0.942	0.078	0.044	-	-	-	-	-
M2: Metric invariance	101.722		74	0.018	0.963	0.958	0.066	0.064	16.459	18	0.561	0.002	0.012
M3: Scalar invariance	127.044		92	0.009	0.954	0.958	0.066	0.071	25.321	18	0.116	0.009	0.000
M4: Strict invariance	142.754		113	0.031	0.961	0.971	0.055	0.077	15.710	21	0.786	0.007	0.011

Note. BWAS = Bergen Work Addiction Scale; CFI = comparative fit index; TLI = Tucker-Lewis index; RMSEA = root mean square error of approximation; SRMR = standardized root mean square residual. Sample B includes 88 participants from central China, 200 from eastern China, 36 from western China, and 23 from northeastern China