To compare long-term risk of reintervention across four uterus-preserving surgical treatments for leiomyomas and to assess effect modification by sociodemographic factors in a prospective cohort study in an integrated health care delivery system.

中文翻译：

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在综合医疗保健系统中进行平滑肌瘤手术治疗后再次干预的长期风险。

比较四种子宫肌瘤保留子宫手术治疗的长期再干预风险，并在综合医疗保健服务系统的前瞻性队列研究中评估社会人口因素对效果的影响。