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Table 4 Fit Statistics for the DIF Model of Depression and Anxiety

From: Measurement invariance of the Patient Health Questionnaire (PHQ-9) and Generalized Anxiety Disorder scale (GAD-7) across four European countries during the COVID-19 pandemic

Model

χ 2

df

p

CFI

TLI

RMSEA

SRMR

Baseline

4,464.357

173

< 0.001

0.915

0.901

0.064

(0.062, 0.066)

0.039

Spain -> GAD 2

4,067.576

172

< 0.001

0.923

0.910

0.061

(0.060, 0.063)

0.037

Spain -> PHQ 9

3,911.610

171

< 0.001

0.926

0.913

0.060

(0.059, 0.062)

0.036

Gender -> PHQ 9

3,825.079

170

< 0.001

0.927

0.915

0.060

(0.058, 0.061)

0.035