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Table 1 Background factors for THA patients and healthy subjects

From: A predictive model for hip abductor strength and knee extensor strength 12 months after total hip arthroplasty with an interaction term

  Patient Control Patient vs Control
p value 95%CI
Background factor
Age 62.9 (7.9) 66.0 (52.3 to 72.3) 0.771 -3.246 to 4.359
Height (cm) 154.1 (5.2) 155.4 (6.5) 0.156 -3.898 to 0.633
Body weight (kg) 54.8 (49.4 to 59.8) 52.7 (47.2 to 59.3) 0.198 -1.200 to 5.000
BMI 22.8 (21.4 to 25.4) 21.9 (20.4 to 24.1) 0.057 -0.025 to 2.280
Disease duration (years) 19.5 (17.0 to 23.0)     
Length of stay (days) 5.0 (2.6 to 10.0)     
Surgical information
Operative time (min) 71.0 (62.3 to 81.8)     
Intraoperative blood loss (ml) 205.0 (150.0 to 300.0)     
Leg extension (mm) 8.6 (4.5 to 12.7)     
Femoral offset (mm) 39.6 (4.9)     
Physical activity
Physical activity (steps/day) 3580.8 (2392.3 to 4971.7)     
  1. Abbreviations: CI confidence interval
  2. Values are presented as mean (standard deviation) or median (1st quartile to 3rd quartile)