[R-meta] Peto random effect?
Am 06.10.21 um 12:39 schrieb Philippe Tadger:
Dear r-sig-meta community, In Revman, doesn't seems to be options to do a Peto with random effect, But I see that is available in meta and metafor. [...] Am I missing something here? Does any one know the reason why is not available in Revman?
I cannot answer the question concerning RevMan. The Peto odds ratio (POR) for an individual study is constructed under the null hypothesis of no treatment difference, i.e., a true odds ratio of 1. This implies that the POR is a biased estimate of the OR for large treatment effects, i.e., if the true odds ratio is far away from 1 (Brockhaus et al., 2014). One may argue that the Peto method, i.e., a meta-analysis using the POR as effect measure, is inherently a fixed effect / common effect method due to its construction under the null hypothesis of no treatment difference. However, in my view, the POR is an effect measure and I do not see why it should not be used in a random effects meta-analysis. Best, Guido 1. Brockhaus AC, Bender R, Skipka G. The Peto odds ratio viewed as a new effect measure. Statistics in Medicine. 2014;33(28):4861?74.