Variables considered for PA development | n (%) | Mean (SD) | Other collected variables | n (%) |
---|---|---|---|---|
Demographics | Â | Â | Contralateral hip status | Â |
 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) |