以下为句子列表：
英文: Among African Americans, risks of antepartum and intrapartum stillbirth were 5.6 and 1.1 per 1,000 singleton births, respectiely; risks among whites were 3.4 and 0.5 per 1,000 births, respectiely.
中文: 由回归模型得到危险比和95%可信区间，评估人口可归因的部分以评价危险因素对死产的影响作用的大小。
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英文: Knowledge on timing of stillbirth specific risk factors may help clinicians in decreasing antepartum and intrapartum stillbirth risks through monitoring and timely interention.
中文: 掌握死产特异的危险因素发生的时机有助于临床医生通过监测及适时介入，减少分娩前及分娩时死胎发生的危险.
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英文: Premature rupture of membranes was associated with intrapartum stillbirth among whites and African Americans, but intrapartum feer was associated with intrapartum stillbirth among African Americans.
中文: 对于白人及非裔美国人，胎膜早破与分娩期内死产有意义，而产时发热仅对非裔美国人发生非裔美国人有意义。
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英文: RESULTS: During the study period, 78 (13.1%) mothers with stillbirths died, compared with 1,518 (6.2%) women without stillbirth (crude hazard ratio 2.08, 95% confidence interval [CI] 1.65–2.61).
中文: 结果：在研究期间，78位(13.1%)有死产史的母亲死亡，同时此期间无死产史的妇女有1518人(6.2%)死亡(初步危险比为2.08,95%可信区间[CI]为1.65–2.61)。
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英文: The presence of any congenital anomaly, abruption, and cord complications were associated with antepartum stillbirth in both races.
中文: 任何先天性畸形、胎盘早剥、脐带合并症是白人及非裔美国人发生产前死胎的危险因素。
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