Table 1: Model fit for the two-, three-, and four-factor models.
Note: aCheung (1998), bGupta (2001), cRadloff (1977).
DA: depressed affect; SS: somatic symptoms; PA: positive affect; IP: interpersonal problems; SR: somatic/retarded activity; CFI: Comparative Fit Index; RMSEA: Root Mean Square Error of Approximation
Item Two-factora Three-factorb Four-factorc
V1. Bothered by things DA SS/DA SR
V2. Appetite poor DA SS/DA SR
V3. Could not shake off the blues DA SS/DA DA
V4. As good as other people DA PA PA
V5. Had trouble keeping mind on things DA SS/DA SR
V6. Felt depressed DA SS/DA DA
V7. Everything did was an effort DA SS/DA SR
V8. Hopeful about future DA PA PA
V9. Life has been a failure DA IP/DA DA
V10. Felt fearful DA IP/DA DA
V11. Restless sleep DA SS/DA SR
V12. Felt happy DA PA PA
V13. Talked less than usual DA IP/DA SR
V14. Felt lonely DA IP/DA DA
V15. People were unfriendly IP IP/DA IP
V16. Enjoyed life DA PA PA
V17. Had crying spells DA SS/DA DA
V18. Felt sad DA IP/DA DA
V19. People dislike me IP IP/DA IP
V20. Could not get going DA SS/DA SR
x² 86.62 81.16 82.21
Df 37 37 37
x²/df 2.34 2.19 2.22
CFI .94 .95 .95
RMSEA .11 .10 .10