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Table 4 Extracted factor loadings of items for each QBYY-Q and the variance explained by two factors

From: Validation of the qi blood yin yang deficiency questionnaire on chronic fatigue

PI Item Sub-scale QD-Q BD-Q YnD-Q YgD-Q
FL1 FL2 FL1 FL2 FL1 FL2 FL1 FL2
QD QD-Q 01 Fatigue 0.821 −0.054       
QD-Q 02 0.798 −0.087       
QD-Q 05 0.824 −0.033       
QD-Q 06 0.444 0.043       
QD-Q 07 0.367 −0.107       
QD-Q 09 0.287 0.160       
QD-Q 03 Weakened voice −0.147 1.098       
QD-Q 04 0.231 0.330       
QD-Q 08 0.171 0.433       
  % of variance explained 27.90 17.20       
BD BD-Q 01 Heart pounding    0.831 −0.081     
BD-Q 02    0.865 −0.182     
BD-Q 03    0.537 0.098     
BD-Q 08    0.537 0.016     
BD-Q 04 Pale and dry body    0.112 0.499     
BD-Q 05    0.090 0.617     
BD-Q 06    −0.222 0.977     
BD-Q 07    0.308 0.313     
  % of variance explained    45.30 12.70     
YnD YnD-Q 02 Rough and dry body      0.508 0.145   
YnD-Q 05      0.712 −0.120   
YnD-Q 06      0.770 −0.102   
YnD-Q 07      0.689 −0.033   
YnD-Q 01 Body steaming      0.243 0.267   
YnD-Q 03      −0.042 0.741   
YnD-Q 04      0.216 0.448   
YnD-Q 08      −0.154 0.848   
YnD-Q 09      0.054 0.388   
  % of variance explained      39.60 12.60   
YgD YgD-Q 01 Preference for warm things        0.821 −0.120
YgD-Q 02        0.560 0.012
YgD-Q 03        0.692 −0.072
YgD-Q 04        0.417 0.225
YgD-Q 05 Diarrhea        −0.146 0.939
YgD-Q 06        0.052 0.646
  % of variance explained        41.50 21.90
  1. The italic letters represents the largest loading between two factors
  2. PI pattern identification, QD qi deficiency, QD-Q qi deficiency questionnaire, BD blood deficiency, BD-Q blood deficiency questionnaire, YnD yin deficiency, YnD-Q yin deficiency questionnaire, YgD yang deficiency, YgD-Q yang deficiency questionnaire, FL factor loading