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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