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Table 1 Selected characteristics of the participants who underwent hip arthroplasty (n = 265)

From: Identification of patients with suboptimal results after hip arthroplasty: development of a preliminary prediction algorithm

Variables considered for PA development n (%) Mean (SD) Other collected variables n (%)
Demographics    Contralateral hip status  
 Age (years)   52 (9.0)   Unaffected 134 (50.4)
 Female 89 (33.6)     Affected, not operated 105 (39.7)
Clinical characteristics      Unavailable 26 (9.9)
 BMI ¬ (kg/m2)   28.2 (5.1) Charnley class  
 Medical comorbidities      Charnley A 124 (46.8)
  Diabetes 19 (7.2)     Charnley B 87 (32.8)
  Gastrointestinal disease 16 (6.0)     Charnley C 13 (4.9)
  Immunosuppression 3 (3.0)     Unavailable 41 (15.5)
  Cardiac disease 21 (7.9)   Employment status  
  Obesity 41 (15.5)     Employed 163 (61.5)
  Osteoporosis 2 (0.8)     Household 44 (16.6)
  Pulmonary disease 15 (5.7)     Retired 9 (3.4)
  Neurological disease 1 (0.4)     Other 11 (4.2)
  Urological disease 1 (0.4)     Unavailable 38 (14.3)
  Other 91 (34.3)   Walking aid  
  None 124 (46.8)     Incapable with aid 5 (1.9)
 Presence of back pain 40 (15.1)     Crutches 1 (0.4)
 Pain localization      Two canes 31 (11.7)
  Buttocks 128 (48.3)     Cane on a permanent basis, instability 118 (44.5)
  Trochanter 164 (61.9)     Cane for outdoor activities 42 (15.8)
  Groin 177 (66.8)     Cane for long distance walking 43 (16.2)
  Thigh 124 (46.8)     Unavailable 25 (9.5)
  Knee 111 (41.9)     Knee(s) status  
  Calf 36 (13.6)     Affected 28 (10.5)
  Radicular 6 (2.2)     Unaffected 204 (77.0)
  Elsewhere 3 (1.1)     Unavailable 33 (12.5)
 Presence of hip pain    Level of activity in the 3 months before surgery  
  At rest 148 (55.8)     Heavy work/sport 26 (9.8)
  After first few steps 182 (68.8)     Moderate work 53 (20.0)
  After a long walk 224 (84.5)     Mild work/walking 112 (42.3)
  During sexual intercourse 156 (58.9)     Sedentary 34 (12.8)
      Immobile 6 (2.3)
      Unavailable 34 (12.8)
    Duration of walking before eliciting pain  
      Walking unaffected 37 (14.0)
      31–60 min 51 (19.2)
      11–30 min 82 (30.9)
      2–10 min 53 (20.0)
      <2 min 16 (6.0)
      Walking impossible 1 (0.4)
      Unavailable 25 (9.5)
  1. SD standard deviation, BMI body mass index
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