1998-2023年:由于改变了试管婴儿指南,美国三胎和高阶出生减少了62%,有利于母亲和婴儿的健康. 1998-2023: US triplet and higher-order births decline 62% due to changed IVF guidelines, benefiting maternal and infant health.

根据美国疾病预防控制中心的报告,从1998年到2023年,美国三胎和高阶出生率下降了62%. From 1998 to 2023, triplet and higher-order births in the U.S. declined by 62%, as reported by the CDC. 这一显著下降,特别是在30岁及30岁以上的母亲中,与强化的关于人工授精等辅助生殖技术期间胚胎转移的准则相关联。 This significant drop, particularly among mothers aged 30 and older, is linked to enhanced guidelines on embryo transfers during assisted reproductive technologies like IVF. 这种下降被认为有利于孕产妇和婴儿健康,减少与多胎分娩有关的风险,包括早产和其他并发症。 The decline is seen as beneficial for maternal and infant health, reducing risks associated with multiple births, including preterm birth and other complications.