ArticleAmerican journal of epidemiology2021
Severe Maternal Morbidity: A Comparison of Definitions and Data Sources.
Article in American journal of epidemiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers, 2 of them syntheses that pooled it.
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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
69 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Preventing posttraumatic stress disorder following childbirth: a systematic review and meta-analysis.American journal of obstetrics and gynecology · 2024Pooled it
- "We adjusted for race": now what? A systematic review of utilization and reporting of race in American Journal of Epidemiology and Epidemiology, 2020-2021.Epidemiologic reviews · 2023Pooled it
- Maternal opioid prescriptions and subsequent risk of hospital admission in offspring in South Korea: A nationwide birth cohort study.PLoS medicine · 2026Article
- Severe Maternal Morbidity with the Inclusion of Events after Delivery Hospitalization.American journal of perinatology · 2026Article
- Intellectual and developmental disability diagnoses in California delivery records and adverse maternal outcomes.Pregnancy (Hoboken, N.J.) · 2026Article
- Effect of improved uterotonic availability on postpartum hemorrhage and maternal morbidity after vaginal delivery, review of a single-center quality-improvement initiative.Pregnancy (Hoboken, N.J.) · 2026Article
- Birth certificate measures of maternal morbidity and their limits in abortion policy research.American journal of epidemiology · 2026Article
- Association of severe maternal morbidity with epilepsy diagnosis in children: a population-based birth cohort study.International journal of epidemiology · 2026Article
- Prenatal Opioid Exposure and Subsequent Risk of Fractures in Children: An Emulated Target Trial Using a Nationwide Birth Cohort.Indian pediatrics · 2026Article
- Measuring Severe Maternal Morbidity: Current Practices, Challenges, and Opportunities.Obstetrics and gynecology · 2026Review
- A technical framework for using electronic medical records to create and maintain a cross-sectional research cohort of pregnant people in the Gulf South.JAMIA open · 2026Article
- Trajectories of Medication Utilization for Opioid Use Disorder in Pregnancy and Associated Maternal Outcomes.O&G open · 2026Article
- Ranked Severe Maternal Morbidity Index for Population-Level Surveillance by Mode of Delivery.Journal of women's health (2002) · 2026Article
- A Spatial Analytic Approach to Maternal Health Following Hurricane Florence (2018).Maternal and child health journal · 2026Article
- Association Between Mental Illness and Risk of Severe Maternal Morbidity in Pregnant Veterans.Obstetrics and gynecology · 2026Article
- Adverse pregnancy outcomes as predictors of postpartum psychiatric illness: a retrospective cohort study.Archives of women's mental health · 2026Observational
- Postpartum severe maternal morbidity: A longitudinal analysis of the association with economic segregation and neighborhood deprivation in Georgia, USA 2016-2022.Social science & medicine (1982) · 2026Article
- Comparison of severe maternal morbidity between pregnancy with subclinical hypothyroidism and overt hypothyroidism.Acta obstetricia et gynecologica Scandinavica · 2026Article
- Article
- Temperature extremes and maternal health: differential risks of severe maternal morbidity during heatwaves and coldwaves in North Carolina.International journal of biometeorology · 2026Article
9 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors.
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Abstract
Severe maternal morbidity (SMM) is a composite outcome measure that indicates serious, potentially life-threatening maternal health problems. There is great interest in defining SMM using administrative data for surveillance and research. In the United States, one common way of defining SMM at the population level is an index developed by the Centers for Disease Control and Prevention. Modifications to this index (e.g., exclusion of maternal blood transfusion) have been proposed; some research defines SMM using an index introduced by Bateman et al. (Obstet Gynecol. 2013;122(5):957-965). Birth certificate data are also increasingly being used to define SMM. We compared commonly used US definitions of SMM among all California births (2007-2012) using the kappa (κ) statistic and other measures. We also evaluated agreement between maternal morbidity fields on the birth certificate as compared with health insurance claims data. Concordance between the 7 definitions of SMM analyzed was generally low (i.e., κ < 0.41 for 13 of 21 two-way comparisons). Low concordance was particularly driven by the presence/absence of transfusion and claims data versus birth certificate definitions. Low agreement between administrative data-based definitions of SMM highlights that results can be expected to differ between them. Further research on validity of SMM definitions, using more fine-grained data sources, is needed.
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