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Table 6 Factor loadings of the K6 resulted from EFA and CFA

From: A Mokken scale analysis of the Kessler-6 screening measure among Chinese older population: findings from a national survey

Item EFA CFA
  One-factor model Two-factor model One-factor model Two-factor model
  Factor Factor 1 Factor 2 Factor Factor 1 Factor 2
1.Depressed 0.811 0.585   0.811 0.838  
2.Nervous 0.828 0.907   0.828 0.839  
3.Restless or fidgety 0.859 0.644   0.859 0.891  
4. Hopeless 0.855   0.880 0.855   0.884
5. Everything was an effort 0.802   0.671 0.802   0.839
6. Worthless 0.857   0.931 0.857   0.882