Table 2 |
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|
Factor loadings |
|||||||
|
GHQ-12 items |
GHQ |
Likert |
C-GHQ |
||||
|
F1 |
F2 |
F1 |
F2 |
F1 |
F2 |
||
|
|
|||||||
|
1. Able to concentrate |
0.68 |
- |
0.66 |
- |
0.66 |
- |
|
|
2. Lost much sleep |
- |
0.62 |
- |
0.65 |
- |
0.62 |
|
|
3. Playing a useful part |
0.69 |
- |
0.71 |
- |
0.70 |
- |
|
|
4. Capable of making decisions |
0.77 |
- |
0.81 |
- |
0.75 |
- |
|
|
5. Under stress |
- |
0.71 |
- |
0.76 |
- |
0.76 |
|
|
6. Could not overcome difficulties |
- |
0.69 |
- |
0.71 |
- |
0.75 |
|
|
Before earthquake |
7. Enjoy normal activities |
0.76 |
- |
0.72 |
- |
0.78 |
- |
|
8. Face up to problems |
0.72 |
- |
0.77 |
- |
0.74 |
- |
|
|
9. Feeling unhappy and depressed |
- |
0.82 |
- |
0.84 |
- |
0.81 |
|
|
10. Losing confidence |
- |
0.72 |
- |
0.78 |
- |
0.81 |
|
|
11. Thinking of self as worthless |
- |
0.48 |
- |
0.52 |
- |
0.58 |
|
|
12. Feeling reasonably happy |
- |
- |
- |
- |
- |
- |
|
|
Inter-factor correlation |
0.43 |
0.43 |
0.13 |
||||
|
1. Able to concentrate |
0.76 |
- |
0.73 |
- |
0.76 |
- |
|
|
2. Lost much sleep |
- |
0.55 |
- |
0.63 |
- |
0.59 |
|
|
3. Playing a useful part |
0.73 |
- |
0.79 |
- |
0.80 |
- |
|
|
4. Capable of making decisions |
0.77 |
- |
0.81 |
- |
0.81 |
- |
|
|
5. Under stress |
- |
0.58 |
- |
0.78 |
- |
0.79 |
|
|
6. Could not overcome difficulties |
- |
0.66 |
- |
0.73 |
- |
0.82 |
|
|
Most stressful time |
7. Enjoy normal activities |
0.80 |
- |
0.69 |
- |
0.80 |
- |
|
8. Face up to problems |
0.83 |
- |
0.84 |
- |
0.85 |
- |
|
|
9. Feeling unhappy and depressed |
- |
0.84 |
- |
0.89 |
- |
0.85 |
|
|
10. Losing confidence |
- |
0.78 |
- |
0.76 |
- |
0.82 |
|
|
11. Thinking of self as worthless |
- |
0.49 |
- |
0.48 |
- |
0.48 |
|
|
12. Feeling reasonably happy |
- |
- |
- |
- |
- |
- |
|
|
Inter-factor correlation |
0.74 |
0.71 |
0.40 |
||||
|
1. Able to concentrate |
0.77 |
- |
0.73 |
- |
0.77 |
- |
|
|
2. Lost much sleep |
- |
0.70 |
- |
0.72 |
- |
0.63 |
|
|
3. Playing a useful part |
0.82 |
- |
0.79 |
- |
0.82 |
- |
|
|
4. Capable of making decisions |
0.83 |
- |
0.81 |
- |
0.84 |
- |
|
|
5. Under stress |
- |
0.78 |
- |
0.82 |
- |
0.76 |
|
|
6. Could not overcome difficulties |
- |
0.66 |
- |
0.77 |
- |
0.80 |
|
|
Now |
7. Enjoy normal activities |
0.73 |
- |
0.71 |
- |
0.80 |
- |
|
8. Face up to problems |
0.78 |
- |
0.77 |
- |
0.83 |
- |
|
|
9. Feeling unhappy and depressed |
- |
0.85 |
- |
0.91 |
- |
0.86 |
|
|
10. Losing confidence |
- |
0.72 |
- |
0.85 |
- |
0.86 |
|
|
11. Thinking of self as worthless |
- |
0.40 |
- |
0.47 |
- |
0.55 |
|
|
12. Feeling reasonably happy |
- |
- |
- |
- |
- |
- |
|
|
Inter-factor correlation |
0.73 |
0.70 |
0.30 |
||||
|
|
|||||||
|
Factor analysis was conducted for GHQ-12 scores at three points of time. GHQ-12 was scored by using the three different methods. |
|||||||
|
Toyabe et al. BMC Public Health 2006 6:230 doi:10.1186/1471-2458-6-230 |
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