ArticleJournal of perinatology : official journal of the California Perinatal Association2019
Short interpregnancy interval as a risk factor for preterm birth in non-Hispanic Black and White women in California.
Article in Journal of perinatology : official journal of the California Perinatal Association, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 5 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
17 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- Determinants of short interpregnancy intervals in high-income countries: a systematic review.Sexual and reproductive health matters · 2025Pooled it
- The association between interpregnancy intervals and preterm birth: a systematic review and meta-analysis.BMC pregnancy and childbirth · 2025Pooled it
- Pooled it
- Birth spacing and risk of adverse pregnancy and birth outcomes: A systematic review and dose-response meta-analysis.Acta obstetricia et gynecologica Scandinavica · 2023Pooled it
- Short interpregnancy interval can lead to adverse pregnancy outcomes: A meta-analysis.Frontiers in medicine · 2022Pooled it
- Distributions of Adverse Childbearing Experiences Across Racial and Ethnic Groups: A Research Note.Demography · 2025Article
- Geospatial analysis of area-level social and behavioral factors associated with short interpregnancy intervals in North Carolina, U.S.Preventive medicine reports · 2025Article
- Short interbirth interval and adverse pregnancy outcomes: a Bayesian network approach.AJOG global reports · 2024Article
- Sexual Socialization Experiences and Perceived Effects on Sexual and Reproductive Health in Young African American Women.Sex roles · 2024Article
- Interactions between long interpregnancy interval and advanced maternal age on neonatal outcomes.World journal of pediatrics : WJP · 2023Article
- Social determinants among Black people during pregnancy following a short interpregnancy interval.AJOG global reports · 2023Article
- The role of intervening pregnancy loss in the association between interpregnancy interval and adverse pregnancy outcomes.BJOG : an international journal of obstetrics and gynaecology · 2022Article
- Protective Places: the Relationship between Neighborhood Quality and Preterm Births to Black Women in Oakland, California (2007-2011).Journal of urban health : bulletin of the New York Academy of Medicine · 2022Article
- Association of Interpregnancy Interval With Adverse Birth Outcomes.JAMA network open · 2022Article
- Explaining the Black-White Disparity in Preterm Birth: A Consensus Statement From a Multi-Disciplinary Scientific Work Group Convened by the March of Dimes.Frontiers in reproductive health · 2021Review
- Interpregnancy intervals and adverse birth outcomes in high-income countries: An international cohort study.PloS one · 2021Article
- Association of Short and Long Interpregnancy Intervals with Adverse Birth Outcomes: Evidence from a Cross-Sectional Study in Northwest China.International journal of general medicine · 2021Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
objectiveShort interpregnancy interval (IPI) is associated with adverse pregnancy outcomes, including preterm birth (PTB < 37 weeks GA). We investigated whether short IPI (< 6 months) contributes to the higher PTB frequency among non-Hispanic Blacks (NHB). STUDY
designUsing a linked birth cohort > 1.5 million California live births, we examined frequencies of short IPI between racial/ethnic groups and estimated risks by multivariable logistic regression for spontaneous PTB. We expanded the study to births 1991-2012 and utilized a "within-mother" approach to permit methodologic inquiry about residual confounding.
resultsNHB women had higher frequency (7.6%) of short IPI than non-Hispanic White (NHW) women (4.4%). Adjusted odds ratios for PTB and short IPI were 1.64 (95% CI 1.54, 1.76) for NHW and 1.49 (1.34, 1.65) for NHB. Using within-mother analysis did not produce substantially different results.
conclusionsShort IPI is associated with PTB but does not explain risk disparity between NHWs and NHBs.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.