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An improvement in the method used to assess discriminatory ability when predicting the chances of a live birth after one or more complete cycles of in vitro fertilisation

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Our paper presents two clinical prediction models that estimate the chance of having a baby over multiple complete cycles of in vitro fertilisation (IVF)—that is, cumulative live birth.1 The pretreatment… Click to show full abstract

Our paper presents two clinical prediction models that estimate the chance of having a baby over multiple complete cycles of in vitro fertilisation (IVF)—that is, cumulative live birth.1 The pretreatment model predicts the chance of cumulative live birth before treatment starts, and the post-treatment model predicts the chance of cumulative live birth just after the first embryo transfer. Through a collaboration with researchers from the University of Utrecht, who have externally validated these models, we have decided to revise the method used to assess the discriminatory ability of our models in the original study. In time to event models, such as ours, discrimination indicates the proportion of all pairs of women who can be ordered such that the woman with the lower predicted chance of live birth is the one who either did not have a live birth or had more complete cycles of IVF to have a live …

Keywords: cycles vitro; complete cycles; birth; vitro fertilisation; method used; live birth

Journal Title: British Medical Journal
Year Published: 2018

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