Skip to main content

Table 2 Patients characteristics and preoperative PROs of included and excluded THA procedures

From: What is the minimum response rate on patient-reported outcome measures needed to adequately evaluate total hip arthroplasties?

Patients characteristics and preoperative PROs Included THA procedures
n = 552
Excluded THA procedures
n = 70
p value
ASA classification (II; n (%)) 284 (51%) 28 (40%) 0.071
Age on date of surgery (years; median (IQR)) 66 (60–71) 65 (55–74) 0.805
BMI (kg/m2; median (IQR)) 26.00 (23.90–28.41) 26.29 (24.48–28.13) 0.389
Gender (male; n (%)) 209 (38%) 31 (44%) 0.298
Diagnosis (osteoarthritis; n (%)) 486 (88%) 60 (86%) 0.575
Charnley score (n (%))    0.064
 A—one hip joint affected 135 (24%) 15 (21%)  
 B1—both hip joints affected 245 (44%) 23 (33%)  
 B2—contralateral hip joint with a total hip prosthesis 110 (20%) 17 (24%)  
 C—multiple joints affected 62 (11%) 15 (21%)  
Comorbidity (yes, n (%)) 178 (32%) 23 (33%) 0.918
Anxiety (yes, n (%)) 123 (22%) 20 (29%) 0.188
Preoperative NRS pain at rest (median (IQR)) 6 (4–7) 5 (4–7) 0.543
Preoperative NRS pain during activity (median (IQR)) 8 (7–9) 8 (7–9) 0.363
Preoperative EQ-5D descriptive system (median (IQR)) 0.693 (0.310–0.775) 0.693 (0.335–0.775) 0.625
Preoperative EQ VAS (median (IQR)) 80 (60–87) 77 (66–85) 0.960
Preoperative HOOS-PS (median (IQR)) 46.1 (37.7–55.9) 50.8 (41.7–55.9) 0.341
Preoperative OHS (median (IQR)) 24 (18–29) 24 (17–29) 0.454
Complication (yes, n (%)) 33 (6%) 8 (11%) 0.118
  1. ASA American Society of Anaesthesiologists, BMI body mass index, EQ-5D descriptive system EuroQol 5 dimensions descriptive system, EQ VAS EuroQol Visual Analogical Scale, HOOS-PS Hip disability and Osteoarthritis Outcome Score-Physical function Short-form, NRS numeric rating scale, OHS Oxford Hip Score, PROs patient-reported outcomes, THA total hip arthroplasty