Change in the miscarriage rate, live birth rate per cycle started, or the multiple pregnancy rate.

流产率，已启动的周期活胎出生率或多胎妊娠率的变化。

youdao

Objective To summarize the experience and realization of elective embryo reduction in early stage of multiple pregnancy.

目的总结多胎妊娠早期实施选择性减胎术的应用价值及体会。

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Premature rupture of membranes, fetal distress, and multiple pregnancy in preterm infants were also common risk factors.

引起早产的胎儿因素以胎儿宫内窘迫、多胎妊娠、胎膜早破为常见原因；

youdao

The drug is not intended for use in women with a multiple pregnancy, such as a twin pregnancy, or other risk factors for preterm birth.

FORBES: New Drug To Prevent Pre-Term Birth Approved

Dr Bowen-Simpkins also said the condition was "more common with a multiple pregnancy", adding the couple "would know by now whether there were twins there or not".

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