Short Interpregnancy Intervals in the United States
Short Interpregnancy Intervals in the United States
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DOI：
10.1097/aog.0b013e3182955e58
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发表时间：
2013-07-01
影响因子：
7.2
通讯作者：
Lindberg, Laura Duberstein
中科院分区：
文献类型：
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作者：
Gemmill, Alison;Lindberg, Laura Duberstein
目的：调查美国短解释间隔的患病率及其相关性。方法：我们分析了2006-2010年全国家庭成长调查中全国代表性样本12，279名女性的怀孕数据。我们将样本限制在采访后5年内的第二次和更高次出生。妊娠间期计算为前一次活产的分娩日期与首次妊娠的受孕日期之间的间隔，短解释间隔定义为间隔小于18个月。我们使用简单和多变量logistic回归分析，以检查短interpregnancy间隔和产妇人口统计学和生育特征，包括怀孕intention.Results：在我们的样本中的2,253例妊娠，三分之一（35%）的前一次分娩的18个月内构思之间的关联。在调整社会人口统计学和生育特征后，如果女性年龄在15-19岁或在首次妊娠时结婚，30岁后开始生育，或报告意外妊娠，则女性更有可能具有较短的解释间隔。更短的解释间隔更有可能是在更多的女性（已婚，非西班牙裔白色，受过大学教育，或非医疗补助分娩）。我们估计，预防意外妊娠将使短间隔妊娠的比例从35%降低到23%。结论：提供有关短间隔妊娠潜在负面影响的咨询，提高妇女避孕药具的使用，以降低意外妊娠率，可能会降低美国短间隔妊娠的比例。
OBJECTIVE: To investigate the prevalence and correlates of short interpregnancy intervals in the United States.METHODS: We analyzed pregnancy data from a nationally representative sample of 12,279 women from the 2006-2010 National Survey of Family Growth. We limited our sample to second and higher-order births within 5 years of the interview. Interpregnancy intervals were calculated as the interval between the delivery date of the preceding live birth and the conception date of the index pregnancy, with short interpregnancy intervals defined as intervals less than 18 months. We used simple and multivariate logistic regression analyses to examine associations between short interpregnancy intervals and maternal demographic and childbearing characteristics, including pregnancy intention.RESULTS: Among the 2,253 pregnancies in our sample, one third (35%) were conceived within 18 months of a previous birth. After adjusting for sociodemographic and childbearing characteristics, women were significantly more likely to have a short interpregnancy interval if they were aged 15-19 years or married at the time of conception of the index pregnancy, initiated childbearing after age 30 years, or reported the pregnancy as unintended. Short interpregnancy intervals were more likely to be intended among more advantaged women (married, non-Hispanic white, college-educated, or non-Medicaid delivery). We estimate that preventing unintended pregnancies would reduce the proportion of short interpregnancy intervals from 35% to 23%.CONCLUSION: Providing counseling about the potential negative consequences of short interpregnancy intervals and improving women's contraceptive use to reduce rates of unintended pregnancy likely would reduce the proportion of short interpregnancy interval pregnancies in the United States.