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Table 2 Demographic characteristics of participants with CF (CFS and ICF) and controls

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

  Chronic fatigue Controls (n = 30) P value
CFS (n = 6 5) ICF (n = 56)
Age (years) 29.7 ± 4.9 27.4 ± 5.2 26.0 ± 3.7 0.001
Sex (female) 42 (64.6) 20 (35.7) 15 (50.0) 0.007
BMI (kg/m2) 22.8 ± 3.5 22.3 ± 3.0 21.8 ± 3.1 0.746
SBP (mm Hg) 116.3 ± 11.0 116.8 ± 10.2 119.2 ± 12.7 0.471
DBP (mm Hg) 69.5 ± 11.1 71.8 ± 9.0 71.2 ± 12.5 0.471
Pulse rate (beats/min) 71.4 ± 8.9 70.0 ± 6.3 72.0 ± 9.5 0.482
Body temperature (°C) 36.4 ± 0.2 36.4 ± 0.2 36.4 ± 0.2 0.601
Smoking 18 (27.7) 13 (23.2) 4 (13.3) 0.305
Regular exercise 20 (30.8) 27 (48.2) 12 (40) 0.145
Regular diet 36 (55.4) 33 (58.9) 19 (63.3) 0.76
Pattern identification
 QD 16 (24.6) 13 (23.2) 14 (46.7) 0.129
 BD 13 (20) 18 (32.1) 6 (20)
 YnD 16 (24.6) 14 (25) 6 (20)
 YgD 20 (30.8) 11 (19.6) 4 (13.3)
  1. The data are represented as the means ± SDs or as numbers of participants and proportions; N (%) for continuous and categorical variables, respectively. One-way ANOVA was performed for continuous variables and Pearson’s χ2 test for categorical variables
  2. CFS chronic fatigue syndrome, ICF idiopathic chronic fatigue, SBP systolic blood pressure, DBP diastolic blood pressure, QD qi deficiency, BD blood deficiency, YnD yin deficiency, YgD yang deficiency