Strengths and limitations
In this study, we found, for the
first time, that women with PCOS phenotypes A and D had an elevated risk
of abortion after FET. This information will, for the first time, help
clinicians develop individualised treatment plans to optimise ART
outcomes. However, the investigation of several risk factors, such as
environmental factors, physical activities and social factors, could not
be included in this study. Due to the retrospective nature of this
study, data on insulin resistance is lacking, and so was not included in
the analysis. In addition, although we have the advantage of a large
sample size, a large difference between groups was observed. Therefore,
a further, large-scale and rigorous prospective validation study is
necessary in future.