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Table 2 Factor structure of the GHQ-12 using principal component analysis with oblique rotation solution

From: The 12-item General Health Questionnaire (GHQ-12): translation and validation study of the Iranian version

  Factor 1 Factor 2
GHQ-12 Items   
1. Able to concentrate 0.57 -
2. Lost much sleep - 0.69
3. Playing useful part 0.81 -
4. Capable of making decisions 0.56 -
5. Under stress - 0.68
6. Could not overcome difficulties - 0.62
7. Enjoy normal activities 0.57 0.46
8. Face up to problems 0.64 -
9. Feeling unhappy and depressed - 0.64
10. Losing confidence 0.62 -
11. Thinking of self as worthless 0.79 -
12. Feeling reasonably happy - 0.56