Carter, Rickey, Lipsitz, Stuart R., Newcombe, Robert Gordon ORCID: https://orcid.org/0000-0003-4400-8867 and Hermayer, Kathie L. 2010. Relative risk estimated from the ratio of two median unbiased estimates. Journal of the Royal Statistical Society 59 (4) , pp. 657-671. 10.1111/j.1467-9876.2010.00711.x |
Abstract
Clinical trials often include binary end points. In some cases, no successes are observed and the usual large sample estimates of relative risk are undefined. The paper proposes an estimator for relative risk based on the median unbiased estimator. The relative risk estimator proposed is well defined and performs satisfactorily for a wide range of data configurations. To facilitate the use of the estimator, a deterministic bootstrap confidence interval is also proposed, and an SAS macro is available to perform the necessary calculations. An on-going randomized clinical trial motivated the development of the estimator and is used to illustrate the approach.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Mathematics |
Subjects: | Q Science > Q Science (General) |
Uncontrolled Keywords: | Binomial distribution; Confidence interval; Coverage probability; Median unbiased estimator; Relative risk; Shrinkage estimator |
Publisher: | John Wiley and Sons |
Last Modified: | 19 Oct 2022 08:39 |
URI: | https://orca.cardiff.ac.uk/id/eprint/18560 |
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