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Table 1 Patient demographics and baseline characteristics

From: A novel positioner for accurately sitting the acetabular component: a retrospective comparative study

  Group A (32 hips, 32 patients) Group B (40 hips, 40 patients) P value
Demographic characteristics
 Age* (year) 66.8 67.3 0.856*
 Female/male 22/10 28/12 0.909#
 Height* (cm) 168.4 ± 6.5 167.1 ± 8.3 0.471*
 Weight* (kg) 73.5 ± 8.7 71.8 ± 9.4 0.433*
 Body mass index* (kg/m2) 26.4 ± 3.6 27.2 ± 2.5 0.271*
 Osteoarthritis/femoral neck 2/12/18 3/15/22 1.000#
 Fracture/spontaneous osteonecrosis
Operative status
 Estimated blood loss* (ml) 334.8 ± 22.9 322.3 ± 30.7 0.060*
 Harris score 13/19/0/0 15/24/1/0 0.685&
 (Excellent/good/fair/poor)
 Duration of surgery* (min) 125.6 ± 13.7 132.2 ± 20.2 0.119*
  1. *The P values were determined with the t test
  2. #The P values were determined with the chi square test
  3. &The P values were determined with the Mann-Whitney U test