TABLE 1.

Model fit of the PHQ-9 (n = 1207) and the GAD-7 (n = 1205).

Scale	Model	χ2	df	p-value	CFI	TLI	RMSEA	90% CI	SRMR
PHQ-9	1-factor	148.37	27	<0.001	0.907	0.876	0.083	0.070–0.096	0.050
	2-factor	96.34	26	<0.001	0.947	0.926	0.064	0.051–0.078	0.038
GAD-7	1-factor	133.13	14	<0.001	0.935	0.903	0.114	0.097–0.132	0.039
	1-factor +	33.97	14	0.001	0.988	0.979	0.053	0.033–0.075	0.024
	2-factor	46.61	21	<0.001	0.982	0.971	0.062	0.044–0.082	0.032

df, degrees of freedom; CFI, comparative fit index; TLI, Tucker–Lewis index; RMSEA, root mean square error of approximation; 90% CI, 90% confidence interval for RMSEA; SRMR, standardized root mean square residual.