TABLE 2.

Bifactor-(S − 1) model fit and reliability indices of the PHQ-9 (n = 1207) and the GAD-7 (n = 1205).

	PHQ-9	GAD-7
Indices of fit
χ2	133.530	27.987
df	21	21
p-value	<0.001	<0.001
CFI	0.948	0.991
TLI	0.910	0.982
RMSEA	0.071	0.049
90% CI	0.059–0.082	0.028–0.071
SRMR	0.033	0.026
Reliability indices
OmegaT	0.80	0.84
OmegaH	0.72	0.76
OmegaHS somatic	0.27	0.27
OmegaHS cognitive	0.22	0.23

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. OmegaT, total omega; omegaH, hierarchical omega; and omegaHS, omega hierarchical subscale.