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Table 2 Age and sex characteristics of the study groups at baseline

From: Magnitude and meaningfulness of change in SF-36 scores in four types of orthopedic surgery

Group % male Age
   M (SD) Range
Total hip replacement (controls) 44.6 70.7 (7.6) 52–86
Total hip replacement (patients) 47.2 70.5 (8.9) 41–96
Total knee replacement 37.1 71.3 (8.1) 43–86
Arthroscopic partial meniscectomy 67.6 44.8 (12.2) 14–75
Anterior cruciate ligament reconstruction 80.6 25.9 (5.1) 18–35