Table 2.

Fit indices for longitudinal invariance models.

Model	χ 2	Δχ2	df	Δdf	CFI	ΔCFI	SRMR	RMSEA (90% CI)	ΔRMSEA
RPBS
Configural	7793.71**	–	876	–	0.92	–	0.04	0.04 (0.03–0.04)	–
Metric	7827.56**	33.85	914	38	0.92	None	0.04	0.04 (0.03–0.04)	0.001
Scalar	7890.25**	62.69	966	52	0.92	None	0.04	0.04 (0.03–0.04)	0.001
Residual	8130.05**	239.79*	1,046	80	0.92	0.002	0.04	0.04 (0.03–0.04)	0.001
PSS-10
Configural	968.54**	–	102	–	0.97	–	0.03	04 (0.03–0.04)	–
Metric	983.68**	15.13	118	16	0.97	None	0.03	03 (0.03–0.04)	0.003
Scalar	1014.94**	31.25	138	20	0.97	None	0.03	03 (0.03–0.04)	0.002
Residual	1061.55**	77.87	164	46	0.97	0.001	0.04	03 (0.03–0.04)	0.003
SSS-8
Configural	647.49**	–	54	–	0.97	–	0.04	0.04 (0.04–0.05)	–
Metric	662.77**	15.27	68	14	0.97	0.001	0.04	0.04 (0.03–0.04)	0.005
Scalar	686.08**	23.31	84	16	0.97	None	0.04	0.03 (0.03–0.04)	0.004
Residual	751.05**	64.96	106	22	0.96	0.002	0.03	0.03 (0.03–0.04)	0.003

**χ² significant at p < 0.001, *Δχ² significant at p < 0.001.