5 | CONCLUSION
We developed the first nomogram and online tool that accurately predicts the risk of SPTB at <32 weeks in twin pregnancy, whose screening performance has been found to be superior to either risk factor alone. It can provide application value to complement the existing clinical evidence, which assists the counselling and decision-making of clinical treatment for twin pregnancy with differing risks of PTB.
Conflict of interest statement: The authors report no conflict of interest. Completed disclosure of interest forms are available to view online as supporting information.