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Table 1 Group characteristics

From: Accuracy of a portable accelerometer-based navigation system for cup placement and intraoperative leg length measurement in total hip arthroplasty: a cross-sectional study

  Previous version group (from our previous study [24]) New version group P value
No. of hips/patients 55 hips (54) 60 hips (58)  
Gender, Male/Female 10/44 13/45 0.610
Age (years) 65.7 ± 11.0 64.3 ± 15.5 0.981
Height (cm) 154.3 ± 7.4 155.8 ± 10.8 0.834
Weight (kg) 58.6 ± 11.2 62.3 ± 14.8 0.325
Side affected, left/right 28/27 31/29 0.935
Type of femoral component, CMK/S-ROM 51/4 49/11 0.079
Preoperative diagnosis a    0.725
 OA 48 51  
 ON 5 9  
 RA 2 0  
Operation time (minutes) 79.8 ± 13.0 78.7 ± 12.0 0.564
  1. OA Osteoarthritis, ON Osteonecrosis of the femoral head, RA Rheumatoid arthritis
  2. Values are given as the mean and the standard deviation, except for number of hips/patients and preoperative diagnosis
  3. No data missing
  4. a The preoperative diagnoses were categorized into 2 classes: 1) OA or 2) ON and RA for statistical analysis