The mediating effects of self-directed learning ability and critical thinking ability on the relationship between learning engagement and problem-solving ability among nursing students in Southern China: a cross-sectional study

Table 4 Structure equation modeling fit indices

Fitness	χ2/df	GFI	AGFI	IFI	TLI	CFI	RMSEA
Acceptable values	< 3	> 0.9	> 0.9	> 0.9	> 0.9	> 0.9	< 0.08
Mediation model	2.609	0.995	0.976	0.997	0.991	0.997	0.055

GFI— goodness of fifit index; AGFI—Adjusted Goodness of Fit Index; IFI—incremental fit index; TLI—tucker-lewis coefficien; CFI—comparative fifit index; RMSEA—root mean square error of approximation

ISSN: 1472-6955