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Table 2 Mean values ± standard deviations and proportions of baseline characteristics in the intervention and control groups at the baseline examination

From: Effects of a traditional herbal medicine on peripheral blood flow in women experiencing peripheral coldness: a randomized controlled trial

Baseline variables Intervention Control p value
 Number 28 30  
 Age, year 49.4 ± 14.8 50.1 ± 13.2 0.86
 Body mass index, kg/m2 20.6 ± 2.5 20.4 ± 3.0 0.72
 Current smokers, % 7.1 3.3 0.52
 Past smokers, % 14.3 16.7 0.81
 Ethanol intake, g/day 2.7 ± 6.4 3.1 ± 6.5 0.80
 Habitual exercise, % 67.9 56.7 0.39
 Perceived mental stress, % 39.3 43.3 0.76
 Systolic blood pressure, mm Hg 111.1 ± 17.4 106.9 ± 13.0 0.29
 Diastolic blood pressure, mm Hg 66.3 ± 10.2 62.8 ± 6.4 0.12
 Medication use for hypertension, % 10.7 3.3 0.28
 Total cholesterol, mg/dl 209.3 ± 27.3 213.0 ± 42.3 0.69
 LDL-cholesterol, mg/dl 117.9 ± 25.2 124.2 ± 37.8 0.46
 HDL-cholesterol, mg/dl 72.7 ± 12.5 70.8 ± 14.2 0.60
 Triglycerides, mg/dl 78.9 ± 42.3 71.2 ± 28.8 0.42
 Blood glucose, mg/dl 92.3 ± 4.8 91.7 ± 7.4 0.76
 hs C-reactive protein, mg/L 44.6 ± 47.7 56.2 ± 151.7 0.70
 Red blood cell counts, ×104/mm3 404.7 ± 24.7 409.5 ± 32.1 0.53
 Hemoglobin, g/dl 12.8 ± 1.2 12.8 ± 0.8 0.99
 White blood cell counts ×102/mm3 49.0 ± 13.5 43.7 ± 10.8 0.11
 Menopause, % 42.9 46.7 0.78
 Fatigue of the eye, % 82.1 66.7 0.18
 Dizziness, % 50.0 36.7 0.31
 Ear ringing, % 25.0 16.7 0.65
 Headache, % 39.3 33.3 0.64
 Shoulder stiffness, % 78.6 83.3 0.65
 Hot flash, % 28.6 36.7 0.52
 Cough, % 32.1 26.7 0.65
 Diarrhea, % 25.0 13.3 0.26
 Constipation, % 57.1 33.3 0.07
 Pain in knee or lower back, % 64.3 73.3 0.46
 Palpitation, % 35.7 20.0 0.18
 Short of breath, % 35.7 33.3 0.85
 Swelling of lower extremities and/or eyelids, % 64.3 43.3 0.11
 Finger chilliness, % 64.3 53.3 0.41
 Foot chilliness, % 67.9 70.0 0.86
 Back chilliness, % 46.4 36.7 0.46
 Whole body chilliness, % 10.7 10.0 0.93
 Peripheral blood flow, PUa) 81.9 ± 44.5 78.8 ± 52.8 0.82
 Skin temperature, °C 29.9 ± 1.24 29.6 ± 1.43 0.61
  1. a) PU: perfusion units = (number of moving blood cells in the measured contents) × (average velocity of blood cells).