The RU_SATED as a measure of sleep health: cross-cultural adaptation and validation in Chinese healthcare students

Table 3 Longitudinal measurement invariance of the RU_SATED-C across time (N = 898)

Hypothesis	χ² (df)	P	Scaled Chi-squared difference test		CFI	ΔCFI	TLI	ΔTLI	RMSEA (90% CI)	ΔRMSEA
Hypothesis	χ² (df)	P	Δχ² (Δdf)	P	CFI	ΔCFI	TLI	ΔTLI	RMSEA (90% CI)	ΔRMSEA
One-factor
Configural	139.541 (47)	< 0.001			0.987		0.982		0.047 (0.038, 0.056)
Metric	143.861 (52)	< 0.001	4.899 (5)	0.428	0.988	0.001	0.984	0.002	0.044 (0.044, 0.053)	− 0.003
Scalar	165.746 (57)	< 0.001	31.812 (5)	< 0.001	0.985	− 0.003	0.983	− 0.001	0.046 (0.038, 0.054)	0.002
Strict	185.003 (63)	< 0.001	25.691 (6)	< 0.001	0.983	− 0.002	0.983	0.000	0.046 (0.039, 0.054)	0.000
Two-factor (Japanese)
Configural	106.216 (42)	< 0.001			0.991		0.986		0.041 (0.032, 0.051)
Metric	110.776 (46)	< 0.001	5.416 (4)	0.247	0.991	0.000	0.987	0.001	0.040 (0.030, 0.049)	− 0.001
Scalar	123.231 (50)	< 0.001	18.179 (4)	0.001	0.990	− 0.001	0.987	0.000	0.040 (0.031, 0.049)	0.000
Strict	146.819 (56)	< 0.001	33.438 (6)	< 0.001	0.988	− 0.002	0.985	− 0.002	0.043 (0.034, 0.051)	0.003
Two-factor (English)
Configural	138.104 (42)	< 0.001			0.987		0.980		0.051 (0.041, 0.060)
Metric	138.546 (46)	< 0.001	0.535 (4)	0.970	0.987	0.000	0.982	0.002	0.047 (0.038, 0.057)	− 0.004
Scalar	154.578 (50)	< 0.001	23.596 (4)	< 0.001	0.986	− 0.001	0.981	− 0.001	0.048 (0.040, 0.057)	0.001
Strict	164.531 (56)	< 0.001	14.025 (6)	0.029	0.985	− 0.001	0.983	0.002	0.046 (0.038, 0.055)	− 0.002
Threshold	N/A	> 0.05	N/A	> 0.05	> 0.90	< 0.010	> 0.90	< 0.010	< 0.08	< 0.015

Report “Used/Standard” fit indices due to use of listwise deletion; df, degrees of freedom; CFI, comparative fit index; TLI, Tucker–Lewis index; RMSEA, root mean square error of approximation; CI, confidence interval; N/A, not applicable

ISSN: 2050-7283