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Table 5 Pairwise Spearman’s correlation coefficients of QBYY-Q scores and sub-scales of the QD-Q, BD-Q, YnD-Q and YgD-Q with the CFS-K and FSS

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

  CFS-K P value FSS P value
QD-Q score 0.645 <0.001 0.721 <0.001
 QD-Q S1: Fatigue 0.653 <0.001 0.704 <0.001
 QD-Q S2: Weakened voice 0.419 <0.001 0.484 <0.001
BD-score 0.467 <0.001 0.441 <0.001
 BD-Q S1: Heart pounding 0.298 <0.001 0.366 <0.001
 BD-Q S2: Pale and dry body 0.481 <0.001 0.411 <0.001
YnD-score 0.485 <0.001 0.408 <0.001
 YnD-Q S1: Rough and dry body 0.387 <0.001 0.252 0.0018
 YnD-Q S2: Body steaming 0.411 <0.001 0.433 <0.001
YgD-score 0.291 <0.001 0.403 <0.001
 YgD-Q S1: Preference for warm things 0.295 <0.001 0.384 <0.001
 YgD-Q S2: Diarrhea 0.083 0.314 0.152 0.063
  1. CFS-K Korean version of the Chalder fatigue scale, FSS fatigue severity scale, QD-score qi deficiency score, BD-score blood deficiency score, YnD-score yin deficiency score, YgD-score yang deficiency score