The relationship between loneliness and problematic social media usage in Chinese university students: a longitudinal study

Table 2 The goodness-of-fit statistics for the nested models

model	χ²	df	CFI	TLI	SRMR	RMSEA	model comparisons	Δχ²	Δdf	p
M1	70.820	8	0.953	0.917	0.106	0.121	M4 vs.M1	49.109	4	< 0.001
M2	40.630	6	0.974	0.939	0.053	0.104	M4 vs.M2	18.919	2	< 0.001
M3	44.628	6	0.971	0.932	0.072	0.109	M4 vs.M3	22.917	2	< 0.001
M4	21.711	4	0.987	0.953	0.022	0.091

ISSN: 2050-7283