FIGURE 4.

(A) Meta‐analysis of studies reporting clinical pregnancy rates by FET interval. Meta‐analysis of the data from 11 series (10 publications) that reported clinical pregnancy rate as an outcome showed that the clinical pregnancy rate was significantly increased in the immediate FET. (B) Meta‐analysis of studies reporting live birth rates by FET interval. Meta‐analysis of the data from 11 series (10 publications) that reported live birth rate as an outcome showed that there were no significant differences between immediate and delayed FETs. REML, restricted maximum likelihood