Improved estimates of floating absolute risk
Article first published online: 18 DEC 2003
Copyright © 2004 John Wiley & Sons, Ltd.
Statistics in Medicine
Volume 23, Issue 1, pages 93–104, 15 January 2004
How to Cite
Plummer, M. (2004), Improved estimates of floating absolute risk. Statist. Med., 23: 93–104. doi: 10.1002/sim.1485
- Issue published online: 18 DEC 2003
- Article first published online: 18 DEC 2003
- Manuscript Accepted: DEC 2002
- Manuscript Received: MAR 2002
- dose response;
- relative risk;
- misspecified models;
- EM algorithm
Floating absolute risks are an alternative way of presenting relative risk estimates for polychotomous risk factors. Instead of choosing one level of the risk factor as a reference category, each level is assigned a ‘floated’ variance which describes the uncertainty in risk without reference to another level. In this paper, a method for estimating the floated variances is presented that improves on the previously proposed ‘heuristic’ method. The estimates may be calculated iteratively with a simple algorithm. A benchmark for validating the floated variance estimates is also proposed and an interpretation of floating confidence intervals is given. Copyright © 2004 John Wiley & Sons, Ltd.