Icon Legend

This session is not in your schedule.

This session is in your schedule. Click again to remove it.

Presentation Icons

Additional registration fee required

Faculty have requested this content not be shared outside of the session

CME Credit Offered

Abstract Award

Recording available 2/16-5/2

AIUM Credit

Foundation Awardee

Poster Icons

Abstract Award

Foundation Awardee

Poster Session 2

Category: Epidemiology

Poster Session 2

(424) National trends in antepartum hospitalization rates in a healthcare claims database, 2011-2021

Wednesday, February 11, 2026

3:30 PM - 5:00 PM

Presenting Author(s)

Anna C. Jarvis, MD (she/her/hers)

Gynecology/Obstetrics Resident
Johns Hopkins University
Johns Hopkins University, Maryland, United States

Coauthor(s)

Alison N. Goulding, MD, MSCR (she/her/hers)

Assistant Professor
Baylor College of Medicine
Houston, Texas, United States
LY

Lisa Yanek, MPH

Assistant Professor
Johns Hopkins University
Johns Hopkins University, Maryland, United States

Submitting Author(s)

Marika Toscano, MD

Assistant Professor
Johns Hopkins University
Baltimore, Maryland, United States

Objective:
Extended antepartum hospitalizations (EAH) for medical and obstetric complications of pregnancy, such as preterm pre-eclampsia with severe features, preterm prelabor rupture of membranes, and vasa previa, have significant economic and social costs, as well as demonstrated impacts on maternal mental health. However, epidemiologic estimates of EAH are > 20 years outdated. The objective of this study was to describe the national prevalence and temporal trends over time of EAH during pregnancy using administrative data from a large insurance claims database.

Study Design:
Using the MarketScan Database, a national convenience sample of commercially insured individuals, we conducted a retrospective analysis of EAH from 1/1/2011 to 12/31/2021. Included were women aged 13–64 with continuous insurance enrollment from 9 months before to 6 months after a delivery. Pregnancies were identified using a published validated algorithm based on diagnosis, procedure, and DRG codes. EAH was defined as a pregnancy-related admission ≥4 days occurring within 259 days before delivery, excluding delivery-only hospitalizations. The primary outcome was the proportion of individuals with EAH; the secondary outcome was annual percent change (APC) in EAH rates. Data were extracted using SAS v 9.4.

Results:
There were 2,009,385 unique pregnancies among commercially insured patients in the United States from 2011 to 2021 (Table 1), with a total of 64,868 antepartum hospitalizations (3.2%), 14,684 (0.73%) of which were extended. The average annual percent change in EAH from 2011 – 2021 was -6.59%, with a standard deviation of 8.59% (Figure 1).

Conclusion:
From 2011–2021, 0.73% of commercially insured pregnancies in the U.S. had an EAH prior to delivery. EAH rates nationally declined by an average of 6.59% over this time period. Findings reflect unweighted data from a commercially insured population and exclude antepartum admissions ending in discharge with childbirth. Further studies are needed to evaluate the financial, social, and care burdens associated with EAH.