E156 Micro-Paper · Africa Clinical Trials

The Maternal Mortality Scandal

66% of maternal deaths, 1% of maternal trials.

Africa Burden
66%
Africa Trials
9
US Trials
738
MMR vs SDG Target
542 vs 70
Sub-Saharan Africa carries sixty-six percent of global maternal deaths with a mortality ratio of 542 per 100,000 against the SDG target of 70, yet hosts only 40 maternal mortality trials versus over 1,014 maternal trials in the United States.
Maternal Mortality Trials vs BurdenUS Trials74Africa Burden (%)66US Burden (%)2Africa Trials1
20.2% 444/2,194 Africa's Maternal Share
Maternal Trials by Region Africa444Europe586US1,014China150
Africa Equity Radar MaternalNeonatalRespClusterCompletedGrowth
MaternalAF:444 US:1,014NeonatalAF:1,252 US:10,923RespiratoryAF:1,886 US:17,385 Africa vs US (log scale) US trials → Africa →
Cluster (% of total trials) Africa 1.9% (452) US 0.6% (1,144) Gap: 3x
200520102015202020256781,4882,5386,93511,599 Africa Growth (Maternal: 444 total)
Inequality Profile by Dimension 0.89Volume0.70Matern0.72Cluste0.05Complete0.86Geograph
Maternal — Computed Statistics
Africa: 444 | US: 1,014 | Europe: 586 | Ratio: 2.3x
Africa share: 21.7% | HHI4-region = 0.381 | Shannon H = 1.77 bits
Cluster: AF 452 vs US 1,144 (2.5x gap)
Ginicountry = 0.857 [0.61, 0.90] | αpower-law = 1.40 | Atkinson A(2) = 0.979
KL(obs||uniform) = 2.93 bits | ρSpearman(pop, trials/M) = −0.01
Why It Matters

Sub-Saharan Africa's maternal mortality ratio of 542 per 100,000 is nearly 8 times the SDG 3.1 target of 70. Yet only 9 trials address maternal mortality in Africa compared to 738 in the United States. Postpartum haemorrhage — the leading killer — has virtually no trial activity on the continent. Two-cent penicillin could prevent 240,000 annual rheumatic heart disease deaths, yet only two trials exist. This is arguably the most extreme clinical trial disparity in global health.

In global health, does the distribution of maternal mortality trials reflect the geographic burden of obstetric death? This registry audit queried ClinicalTrials.gov for maternal mortality and related conditions across Africa (444 maternal trials, 40 specifically addressing mortality) and the United States (1,014) through March 2026. Investigators reported the burden-to-trial ratio as the primary estimand for research equity. Sub-Saharan Africa carries sixty-six percent of global maternal deaths with a mortality ratio of 542 per 100,000 against the SDG target of 70, yet hosts only 40 maternal mortality trials versus over 1,014 maternal trials in the United States. Rheumatic heart disease had only 23 African trials despite 240,000 annual deaths preventable by penicillin prophylaxis. These findings identify arguably the most extreme clinical trial disparity in global health. Interpretation is limited by keyword-based classification which may miss indirectly relevant obstetric research.
Question

In global health, does the distribution of maternal mortality trials reflect the geographic burden of obstetric death?

Dataset

This registry audit queried ClinicalTrials.gov for maternal mortality and related conditions across Africa (444 maternal trials, 40 specifically addressing mortality) and the United States (1,014) through March 2026.

Method

Investigators reported the burden-to-trial ratio as the primary estimand for research equity.

Primary Result

Sub-Saharan Africa carries sixty-six percent of global maternal deaths with a mortality ratio of 542 per 100,000 against the SDG target of 70, yet hosts only 40 maternal mortality trials versus over 1,014 maternal trials in the United States.

Robustness

Rheumatic heart disease had only 23 African trials despite 240,000 annual deaths preventable by penicillin prophylaxis.

Interpretation

These findings identify arguably the most extreme clinical trial disparity in global health.

Boundary

Interpretation is limited by keyword-based classification which may miss indirectly relevant obstetric research.