Language Testing in Asia

Table 1 Relative and absolute fit indices for initial and final Q-matrices

From: Test-level and Item-level Model Fit Comparison of General vs. Specific Diagnostic Classification Models: A Case of True DCM

Model	#N par	AIC	BIC	M₂	RMSEA₂	RMSEA₂ CI 1	RMSEA₂ CI 2	SRMSR	-2log likelihood
Initial Q-matrix	267	120,336	121,799	3221	0.0245	0.0233	0.0257	.0399	119,802
Final Q-matrix	175	78,939	79,898	982	0.0204	0.0182	0.0225	0.0316	78,589

Note: #N par number of parameters, CI confidence interval

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