Table 3.

Comparing model fit indices of change in exercise, grit, and life satisfaction

Variables	Model	χ2	df	p	Turker–Lewis index	Comparative fit index	Root mean square error of approximation
Exercise	No growth	39.270	4	< 0.001	0.974	0.965	0.064
	Linear	4.363	1	0.037	0.990	0.997	0.040
Grit	No growth	74.448	4	< 0.001	0.953	0.937	0.091
	Linear	0.556	1	0.456	1.001	1.000	0.000
Life satisfaction	No growth	215.945	4	0.000	0.847	0.796	0.157
	Linear	7.001	1	0.008	0.983	0.994	0.053

*p < 0.05, **p < 0.01, assessed through structural equation analysis