Table 4.
Factor loadings of the K-BDRS.
| Factor | |||
|---|---|---|---|
| 1 | 2 | 3 | |
| 13. Suicidal ideation | .794 | −.077 | .064 |
| 14. Guilt | .726 | −.097 | .015 |
| 11. Worthlessness | .628 | .156 | −.053 |
| 12. Helplessness | .603 | .324 | −.032 |
| 8. Anxiety | .578 | .128 | .213 |
| 1. Depression | .553 | .287 | .060 |
| 17. Lability | .500 | −.357 | .392 |
| 2. Sleep disturbance | .393 | −.074 | −.002 |
| 10. Flattened affect | −.289 | .952 | .235 |
| 6. Reduced motivation | .250 | .621 | −.194 |
| 5. Activity/energy reduction | .296 | .619 | −.140 |
| 9. Anhedonia | .272 | .593 | −.026 |
| 4. Social impairment | .302 | .410 | −.135 |
| 7. Reduced concentration | .266 | .405 | −.014 |
| 3. Appetite disturbance | .191 | .213 | .196 |
| 18. Increased motor drive | −.192 | .049 | .840 |
| 19. Increased speech | −.040 | −.086 | .797 |
| 20. Agitation | .196 | .287 | .574 |
| 15. Psychotic symptoms | −.015 | .412 | .560 |
| 16. Irritability | .380 | −.322 | .395 |
Extraction method: unweighted least squares
Rotated method: Promax with Kaiser normalization
Loadings in bold represent the highest loading of each item onto one of the three factors
K-BDRS Korean version of the Bipolar Depression Rating Scale
Factor 1: psychological depressive symptoms
Factor 2: somatic depressive symptoms
Factor 3: mixed symptoms