Factor | Number | Item | Factor loading | Extraction sums of squared loadings | % of varaince | Cumulative % | Cronbach’s α |
---|---|---|---|---|---|---|---|
Qi Depression (Factor 1) | Q18 | Anxiety and preoccupation | 0.867 | 8.297 | 41.487 | 41.487 | 0.929 |
Q19 | Depression | 0.833 | |||||
Q20 | Disinclination to talk | 0.789 | |||||
Q17 | Vexation and agitation | 0.740 | |||||
Q3 | Night panting | 0.518 | |||||
Heart Qi Vacuity and Blood Stasis (Factor 2) | Q4 | Panting on exertion | 0.775 | 1.825 | 9.124 | 50.611 | 0.793 |
Q8 | Oppression in the chest | 0.725 | |||||
Q9 | Chest pain | 0.708 | |||||
Q5 | Shortness of breath | 0.690 | |||||
Q6 | Shortage of qi | 0.644 | |||||
Q7 | Palpitations | 0.635 | |||||
Heart Blood Vacuity (Factor 3) | Q12 | Listlessness of essence-spirit | 0.672 | 1.452 | 7.258 | 57.869 | 0.767 |
Q14 | Fqtigue | 0.632 | |||||
Q16 | Amnesia | 0.565 | |||||
Dual Qi-Blood Vacuity (Factor 4) | Q2 | Dizzy vision | 0.829 | 1.238 | 6.189 | 64.058 | 0.639 |
Q1 | Dizziness | 0.744 | |||||
Q11 | Lack of strength in the limbs | 0.569 | |||||
Yang Vacuity (Factor 5) | Q10 | Cold limbs | 0.823 | 0.989 | 4.947 | 69.005 | 0.802 |
Q15 | Fear of cold | 0.817 |