首页>
美国卫生研究院文献>Acta Orthopaedica
>The Cox model is better than the Fine and Gray model when estimating relative revision risks from arthroplasty register data
【2h】
The Cox model is better than the Fine and Gray model when estimating relative revision risks from arthroplasty register data
>Background and purpose — Analysis of the revision-free survival of knee and hip prostheses has traditionally been performed using Kaplan–Meier analysis and Cox regression. The competing risk problem that is related to patients who die during follow-up has recently been increasingly discussed, not least with regard to the problem of choosing a suitable statistical method for the analysis. We compared the results from analyses of Cox models and Fine and Gray models.>Methods — We used data simulation based on parameter estimates from the Swedish Knee Arthroplasty Register and assessed hypothetical effects of the studied risk factors.>Results — The Cox model provided more adequate results.>Interpretation — The parameter estimates from the Fine and Gray model can be misleading if interpreted in terms of relative risk.
展开▼