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Table 1 Patient pre-operative demographics

From: Influence of skin incision position on physiological and biochemical changes in tissue after primary total knee replacement – A prospective randomised controlled trial

Demographic Midline Paramedian P value
Mean age (years) 68 74 0.133
Sex (% female) 67% 70% 1.0
BMI 32 31 0.706
Diagnosis – osteoarthritis of the knee 100% 100% 1.0