期刊
JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE
卷 22, 期 2, 页码 106-110出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14767050802488204
关键词
Pre-maturity; preterm birth; twins; birth timing
资金
- NIH
Objective. To test the hypothesis that the timing of twin births is correlated to that of their singleton siblings. Methods. Using the Missouri Department of Health's birth certificate database we performed a retrospective population-based cohort study of 2222 women who had at least one singleton and one twin birth (1989-1997). Pearson correlation analysis was conducted to examine the relationship in gestational age between singleton and twin births occuring in the same mother. Results. Among 2222 mothers who had both a singleton and twin pregnancy during the study period, the mean difference in birth timing between singleton and twin siblings was 3.05 weeks (2.9 weeks). The correlation between singleton and twin birth timing was statistically significant (r=0.28, p0.001), and remained significant even after controlling for potential confounders (=0.459, p0.001). Conclusions. We identified a significant correlation in the timing of birth between singleton and twin pregnancies in the same mother, which could be due to shared genetic, environmental, medical, social and other influences. This finding could be useful to help predict birth timing in mothers at especially high risk of preterm birth, those with a twin gestation.
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