Sudden infant death syndrome: a re-examination of temporal trends

被引:14
作者
Lisonkova, Sarka [1 ,2 ]
Hutcheon, Jennifer A. [1 ,2 ]
Joseph, K. S. [1 ,2 ,3 ]
机构
[1] Univ British Columbia, Dept Obstet & Gynaecol, Vancouver, BC V6H 3V4, Canada
[2] Womens Hosp & Hlth Ctr British Columbia, Vancouver, BC V6H 3V4, Canada
[3] Univ British Columbia, Sch Populat & Publ Hlth, Vancouver, BC V6H 3V4, Canada
来源
BMC PREGNANCY AND CHILDBIRTH | 2012年 / 12卷
基金
加拿大健康研究院;
关键词
SIDS; Temporal trend; Gestational age; UNITED-STATES; GESTATIONAL-AGE; INTERNATIONAL COMPARISONS; CLINICAL ESTIMATE; MORTALITY CURVES; BIRTH; SIDS; RATES; EPIDEMIOLOGY; RISK;
D O I
10.1186/1471-2393-12-59
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
Background: While the reduction in infants' prone sleeping has led to a temporal decline in Sudden Infant Death Syndrome (SIDS), some aspects of this trend remain unexplained. We assessed whether changes in the gestational age distribution of births also contributed to the temporal reduction in SIDS. Methods: SIDS patterns among singleton and twin births in the United States were analysed in 1995-96 and 2004-05. The temporal reduction in SIDS was partitioned using the Kitagawa decomposition method into reductions due to changes in the gestational age distribution and reductions due to changes in gestational age-specific SIDS rates. Both the traditional and the fetuses-at-risk models were used. Results: SIDS rates declined with increasing gestation under the traditional perinatal model. Rates were higher at early gestation among singletons compared with twins, while the reverse was true at later gestation. Under the fetuses-at-risk model, SIDS rates increased with increasing gestation and twins had higher rates of SIDS than singletons at all gestational ages. Between 1995-96 and 2004-05, SIDS declined from 8.3 to 5.6 per 10,000 live births among singletons and from 14.2 to 10.6 per 10,000 live births among twins. Decomposition using the traditional model showed that the SIDS reduction among singletons and twins was entirely due to changes in the gestational age-specific SIDS rate. The fetuses-at-risk model attributed 45% of the SIDS reduction to changes in the gestational age distribution and 55% of the reduction to changes in gestational age-specific SIDS rates among singletons; among twins these proportions were 64% and 36%, respectively. Conclusion: Changes in the gestational age distribution may have contributed to the recent temporal reduction in SIDS.
引用
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页数:10
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