Table 2

Predicted quality of life and costs by preoperative Oxford hip score (OHS)/Oxford knee score (OKS) at primary operation

OutcomeTHRTKR
OHS 5
(5th percentile)
OHS 17
(50th percentile)
OHS 32
(95th percentile)
OKS 6
(5th percentile)
OKS 18
(50th percentile)
OKS 32
(95th percentile)
A. Quality of life
 Postoperative EQ-5D utility0.6120.7980.8900.4980.7350.851
 Preoperative EQ-5D utility−0.0820.3540.671−0.0330.4210.687
 EQ-5D utility>12 months after primary arthroplasty0.5010.7000.813
 EQ-5D utility before revision surgery0.1200.3630.5440.0540.3550.474
 EQ-5D utility after revision surgery0.4370.6730.7830.2930.5720.684
B. Costs (in £)
 Costs of primary arthroplasty568755025442615860366021
 Costs of revision arthroplasty776879578160780477517678
 Costs in the 12 months before arthroplasty579416320963898513
 Readmissions<12 months after primary arthroplasty740422314888499404
 Ambulatory costs<12 months after primary arthroplasty5213147446352286
 Readmissions>12 months after primary arthroplasty16111585266169120
 Readmissions in the year of revision surgery675747621959860758
 Readmissions>12 months after revision surgery23814473360225150
 Ambulatory costs>12 months after primary arthroplasty482719
 Ambulatory costs in the year of revision surgery816533351
 Ambulatory costs for patients after revision surgery12815536
  • The columns show average predicted quality of life and costs for patients with different preoperative OHS and OKS scores. Predictions are averaged across the estimation sample. Columns 1 and 4 show values for patients at the 5th percentile of the OHS/OKS distribution. Columns 2 and 4 show outcomes for patients at the median of OHS/OKS distributions, and columns 3 and 6 show outcomes for patients at the 95th percentile of the OHS/OKS distribution.

  • EQ-5D, EuroQoL-5 Dimensions; THR, total hip replacement; TKR, total knee replacement.