Survivorship analysis and confidence intervals. An assessment with reference to the Stanmore total knee replacement

This is the authors' abstract. We don't add key points for this paper.

Survivorship analysis is a useful way of expressing the long-term results of joint replacement: it provides a means of comparing the life span of one type of prosthesis with another. However, such studies should include a full life-table and the confidence intervals for the survival rates at given times. At least 40 surviving prostheses are required to provide reliable results.