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Table 1 Preoperative demographics

From: Influence of tourniquet use in primary total knee arthroplasty with drainage: a prospective randomised controlled trial

Demographics Non-tourniquet Tourniquet P value
Number of patients 68 72
Age (years) 69.1 ± 7.6 66.8 ± 8.6 0.095
Gender (female/male) 61/7 59/13 0.19
Diagnosis (OA/RA) 52/16 50/22 0.35
BMI (kg/m2) 25.7 ± 3.4 26.1 ± 4.1 0.53
Preoperative HSS score 47.7 ± 11.8 49.6 ± 12.3 0.351
Preoperative knee ROM 85.3 ± 27.5 89.5 ± 22.7 0.323
Preoperative haemoglobin (g/dl) 125.1 ± 12.9 123.8 ± 14.9 0.581
Preoperative VAS score
 Thigh pain 0.1 ± 0.6 0.0 ± 0.5 0.284
 Knee rest pain 0.7 ± 1.3 0.5 ± 1.5 0.399
 Knee active pain 5.5 ± 1.3 5.7 ± 1.6 0.417
  1. Data are shown as mean ± standard deviation or numbers (%). Body mass index (BMI) equals weight in kilogrammes divided by the square of the height in metres
  2. OA osteoarthritis, RA rheumatoid arthritis, ROM range of motion, VAS visual analogue scale, HSS hospital for special surgery