Table II.

Measurement Invariance of the GAD-7 and CESD-R-10 Scales by Sex and Grade Among Y₇ COMPASS (2018–19) Participants

		χ2 (df)	CFI	SRMR	RMSEA (90% CI)	Δχ2 (df)	ΔCFI	ΔSRMR	ΔRMSEA
GAD-7	Sexa
	Configural	4,756.7 (28)	0.978	0.027	0.069 (0.067–0.070)	–	–	–	–
	Metric	4,097.3 (34)	0.981	0.029	0.058 (0.056–0.059)	219.4 (6)	0.003	0.002	−0.011
	Scalar	3,120.6 (47)	0.986	0.029	0.043 (0.041–0.044)	119.6 (13)	0.005	0.000	−0.015
	Strict	5,094.5 (55)	0.976	0.058	0.051 (0.049–0.052)	1,879.3 (8)	−0.010	0.029	0.008
	Gradeb
	Configural	3,524.4 (28)	0.978	0.028	0.098 (0.096–0.101)	–	–	–	–
	Metric	3,027.6 (34)	0.981	0.028	0.083 (0.080–0.085)	49.6 (6)	0.003	0.000	−0.015
	Scalar	2,391.7 (47)	0.985	0.028	0.062 (0.060–0.064)	76.7 (13)	0.004	0.000	−0.021
	Strict	1,461.9 (55)	0.991	0.037	0.045 (0.043–0.046)	284.8 (8)	0.006	0.009	−0.017
CESD-R-10	Sexa
	Configural	2,694.2 (60)	0.979	0.029	0.035 (0.034–0.036)	–	–	–	–
	Metric	2,449.8 (69)	0.981	0.038	0.031 (0.030–0.032)	547.0 (9)	0.002	0.009	−0.004
	Scalar	2,653.7 (88)	0.980	0.041	0.029 (0.028–0.030)	643.1 (19)	−0.001	0.003	−0.002
	Strict	5,803.3 (99)	0.955	0.059	0.040 (0.039–0.041)	2,296.2 (11)	−0.025	0.018	0.011
	Gradeb
	Configural	1,693.8 (60)	0.975	0.034	0.046 (0.044–0.048)	–	–	–	–
	Metric	1,416.8 (69)	0.980	0.037	0.039 (0.037–0.041)	227.6 (9)	0.005	0.003	−0.007
	Scalar	1,464.0 (88)	0.979	0.038	0.035 (0.033–0.037)	233.5 (19)	−0.001	0.001	−0.004
	Strict	1,672.2 (99)	0.976	0.043	0.035 (0.034–0.037)	344.9 (11)	−0.003	0.005	0.000

Note. CFI = comparative fit index; CI = confidence interval; df = degrees of freedom; RMSEA = root mean standard error of approximation; SRMR = square root mean residual. All χ² values were p < .001.

^aMale versus female.

^bGrade 12 versus 9.