Fig. (1) Two-factor model of the PHQ-9. [N=252; (χ2 = 44.3, df = 26; χ2/df = 1.7; CFI = 0.97; GFI = 0.98; RMSEA = 0.053 (90% CI = 0.024-0.079); SRMR = 0.044).