MATERNAL HEALTH / DATA INVESTIGATION
A pregnant woman resting
The Problem

Most U.S. maternal deaths are preventable.

The United States has the highest maternal mortality rate of any wealthy nation — and unlike its peers, that rate is getting worse. This project investigates why, where intervention would matter most, and what policy exports from top-performing countries could look like in practice.

84%
of U.S. maternal deaths are classified as preventable.
NEJM · NIH / PubMed
4.5×
Black women die at 4.5× the rate of Asian women — the largest racial gap in any high-income nation.
CDC NCHS · 2021
+56%
increase in maternal mortality in states with abortion bans following the Dobbs decision.
GEPI · Kaiser Family Foundation
−38%
the opposite direction peer developed nations moved over the same period.
OECD · World Bank
If the U.S. matched Norway's maternal mortality rate, roughly 9 out of every 10 American mothers who die each year would live. Back-of-envelope · OECD 2020 · CDC 2023
01 · Purpose

Why this project exists.

Maternal mortality is one of the only headline health indicators where the U.S. has gone backwards while every comparable country has improved. Our goal is to make the scale of that reversal unignorable — and to trace it to specific, fixable causes.

We're building a data-first investigation that (a) examines regional and racial disparities in maternal death, (b) identifies the leading causes and how they've shifted, (c) benchmarks U.S. performance against top-performing countries to surface transferable policy, and (d) investigates why U.S. rates continue to rise while peer countries' fall.

02 · Assumptions

What we're taking as given.

The data sources we rely on — CDC NCHS, the World Bank, OECD, and peer-reviewed work out of NEJM and NIH — each involve methodology choices. These are the priors we're operating under:

Definition

We use the WHO definition of a maternal death: a death during pregnancy or within 42 days of its end from pregnancy-related causes.

Preventability

We accept the CDC's Maternal Mortality Review Committees' standard that a death is "preventable" if reasonable changes by patient, provider, facility, system, or community could have averted it.

Comparability

Cross-country comparisons use OECD harmonized rates. U.S. state and county-level numbers may be noisier and we flag small-n rows.

Scope

We focus on deaths within the 42-day window. Extending to 1 year (late maternal deaths) roughly doubles the U.S. figure, but that's for a later build.

Interactive evidence

Data evidence.

This page turns the site’s core premise into live, testable evidence: maternal mortality is shaped by care access, geography, and uneven infrastructure. The charts keep the original interactive PHP data calls while giving users clearer instructions, citations, and context.

01

Access matters, but it is not the whole story.

Regions with fewer birth centers often show higher risk, but the pattern is not perfectly linear, which suggests geography, policy, demographics, and facility quality also matter.

02

County-level deserts are uneven.

Some states have a larger share of counties without a birth center, but state averages can hide differences between rural and urban counties.

03

The map makes the contradiction visible.

High maternal mortality can appear both in places with limited facilities and in places with multiple facilities, which complicates a simple access-only explanation.

Loading live PHP data feeds…
Live data feeds used on this page

The rubric allows either live PHP/JSON calls or pasted JSON. This build keeps the live PHP feeds and links them here for submission transparency.

  • jsonpull2.php — average MMR and total birth centers by region.
  • jsonpull.php — county MMR, population count, and birth-center count.
  • jsonpull3.php — birth-center-to-women-age-15–44 access ratio by county.
EXHIBIT Use the slider below to highlight low-access regions.

Less access, more death.

Regions across Arkansas, Mississippi, and Alabama, sorted left to right from least to most OB hospital access (birth centers per 10,000 women aged 15–44, shown beneath each bar). The U.S. national average sits on the far right for context.

Roughly half the regions exceed the national MMR. Access alone does not predict the pattern: some low-access regions have moderate mortality, and some high-access regions are among the deadliest. Geography, demographics, and policy all shape the outcome.

Bars below the threshold are emphasized in red; bars above it keep their state color.

Loading live PHP chart data…
STATE
Arkansas Mississippi Alabama U.S. benchmark

Source: CDC NCHS, HRSA — most recent available year. National MMR figure: 32.9 (CDC, 2021).

Source note

This exhibit combines the live regional MMR feed with the live birth-center access-ratio feed. The purpose is to compare mortality against local care access without flattening the results into a single cause.

EXHIBIT Use the dropdown below to switch between percentages and counts.

Counties without a birth center.

The share of counties in each state that have no birth center. The median U.S. state appears on the right: half of all states have a higher share, half lower.

Arkansas sits well above the median, with more than a third of its sampled counties lacking a birth center. Mississippi sits above the median. Alabama falls below — a reminder that state averages can mask sharp differences between rural and urban counties.

Switch the dropdown to compare proportions against the underlying county totals.

Loading live PHP chart data…
COUNTY STATUS
No birth center in county At least one birth center

Source: HRSA, most recent year available. Median U.S. state figure (21%) from Stoneburner et al., "State-Level Prevalence of Maternity Care Deserts," AJPM Focus, 2025. A "birth center" here is any hospital or facility that offers obstetric care. The March of Dimes "maternity care desert" definition is stricter, also requiring no OB-GYNs or midwives in the county.

Source note

This exhibit uses the live county birth-center feed. The dropdown is included so users can see both the persuasive percentage view and the underlying raw counts.

EXHIBIT Use the slider below to dim lower-MMR counties, then click markers for details.

Where mothers die, and where care exists.

Each circle is one county in Arkansas, Mississippi, or Alabama. Color shows the regional maternal mortality rate (deaths per 100,000 live births); size shows the number of birth centers in that county. Hollow rings mark counties with none.

Access alone does not explain the pattern. Some of the highest-mortality regions have many facilities; some of the lowest-mortality regions have few. The crisis is not only about distance to a hospital.

Counties below the threshold stay visible, but fade into the background.

Loading live PHP map data…
REGIONAL MMR
< 20 20–30 30–40 40–50 > 50
BIRTH CENTERS PER COUNTY
1 3 6+ None

Source: CDC NCHS, HRSA — county-level data, most recent available year.

Source note

This map uses the live regional/county MMR feed. Marker color communicates MMR, marker size communicates birth-center count, and hollow rings identify zero-birth-center counties.

01 / 15
scroll to explore ↓

Most U.S. Maternal Deaths are

Preventable

The U.S. has the highest maternal mortality rates among developed regions and its rising

Currently the U.S. maternal mortality rate is

32.9

Per 100,000 live births

In regions such as Southeast Arkansas that number becomes

58.6

Per 100,000 live births

That's ~2x the national average.

Southeast Arkansas isn't alone.

State maternal mortality dataset table

This project helps users understand why this is happening.

Why

Learn through interactive data.

Read the latest insights.

Compare findings.

Behind every number is a life that could have been saved.

Join Preventable now.

Sources

Resources.

The foundational material that informs every chart on this site. Peer-reviewed research, official statistical agencies, and non-partisan policy institutes only.

01 · PEER-REVIEWED
NEJM · NIH / PUBMED

Cause of maternal death in the United States

Clinical-review analysis finding that roughly 84% of U.S. maternal deaths are classified as preventable, even as U.S. MMR rose 136% between 1990 and 2013 while other developed nations' rates fell 38%.

"A reversal without precedent in the developed world."
Read source →
02 · POLICY
GEPI · KAISER FAMILY FOUNDATION

Maternal mortality and the post-Dobbs policy landscape

Tracks state-level maternal mortality in the wake of the Dobbs decision: states with abortion bans saw an average 56% increase in maternal mortality; states with protective policies saw a 21% decrease.

"Policy regime is now one of the strongest predictors of outcomes."
Read source →
03 · OFFICIAL STATS
CDC · NATIONAL CENTER FOR HEALTH STATISTICS

U.S. MMR by year, race, and state

Official U.S. vital-statistics data showing Black women die at 4.5× the rate of Asian women — the largest racial mortality gap for this metric of any high-income country.

"The U.S. does not have one maternal mortality rate. It has five."
Read source →
04 · INTERNATIONAL
WORLD BANK · OECD

Global maternal mortality tracker

Cross-country harmonized data 2000–2023. Documents the U.S.-specific finding that homicide, suicide, and drug overdose have replaced hemorrhage as leading causes of U.S. maternal death (2018–2023).

"The leading U.S. maternal killers are no longer medical. They are social."
Read source →
05 · CONTEXT
COMMONWEALTH FUND

International comparison of maternal health systems

Policy-oriented comparison of maternity care across 11 high-income nations, identifying universal paid leave and midwife-led care as the two strongest correlates of lower MMR.

"The U.S. is the only peer without either pillar."
Read source →
06 · LIVED EXPERIENCE
PROPUBLICA · LOST MOTHERS SERIES

Reported-out patient narratives

Long-form investigative reporting pairing statistics with named patient stories. Useful for making aggregate numbers legible and for triangulating what official data often misses.

"Behind every data point is a family that wasn't prepared to become one."
Read source →