Table 4.

Multi-group analysis nested model test results

Group	Nested Model	Δχ2	Δdf	P	ΔCFI	ΔTLI
Sex	Model 0 vs. Model 1	18.999	11	0.061	0.000	0.001
	Model 1 vs. Model 2	101.671	17	< 0.001	−0.002	0.000
	Model 2 vs. Model 3	40.305	6	< 0.001	−0.001	−0.001
	Model 3 vs. Model 4	113.064	10	< 0.001	−0.002	−0.001
	Model 4 vs. Model 5	145.917	2	< 0.001	−0.003	−0.003
	Model 5 vs. Model 6	423.480	19	< 0.001	−0.007	−0.007
School type	Model 0 vs. Model 1	20.592	11	0.038	0.000	0.001
	Model 1 vs. Model 2	180.742	17	< 0.001	−0.004	−0.002
	Model 2 vs. Model 3	54.330	6	< 0.001	−0.001	−0.001
	Model 3 vs. Model 4	47.368	10	< 0.001	−0.001	0.000
	Model 4 vs. Model 5	0.097	2	0.953	0.000	0.001
	Model 5 vs. Model 6	139.034	19	< 0.001	−0.001	−0.001
Mental health	Model 0 vs. Model 1	47.059	11	< 0.001	−0.001	0.000
	Model 1 vs. Model 2	701.805	17	< 0.001	−0.016	−0.016
	Model 2 vs. Model 3	233.075	6	< 0.001	−0.005	−0.005
	Model 3 vs. Model 4	41.676	10	< 0.001	−0.001	0.001
	Model 4 vs. Model 5	384.755	2	< 0.001	−0.008	−0.009
	Model 5 vs. Model 6	411.491	19	< 0.001	−0.005	−0.005
Cell phone dependence	Model 0 vs. Model 1	68.512	11	< 0.001	−0.001	−0.001
	Model 1 vs. Model 2	768.643	17	< 0.001	−0.017	−0.018
	Model 2 vs. Model 3	306.104	6	< 0.001	−0.007	−0.006
	Model 3 vs. Model 4	64.670	10	< 0.001	−0.002	0.000
	Model 4 vs. Model 5	674.862	2	< 0.001	−0.015	−0.016
	Model 5 vs. Model 6	490.140	19	< 0.001	−0.006	−0.006