SASunday A. Adetunji

Publications and outputs

Research papers, accepted conference manuscripts, abstracts, and evidence products.

Each record is structured for scholarly review: status, venue, abstract, methods, contribution, role, impact, and evidence file.

2026

Maternal Safety & Rescue Systems · Contributed Conference Paper

The Obstetric Rescue Clock: Early versus Delayed Rescue Procedures and Maternal Mortality

This study operationalized a scalable Obstetric Rescue Clock in U.S. delivery hospitalizations using the 2021 HCUP National Inpatient Sample. Among high-risk delivery hospitalizations receiving qualifying rescue procedures, early rescue on hospital day 0–1 was compared with delayed rescue on day 2 or later. The targ…

Joint Statistical Meetings (ASA) 2026Accepted / presented as contributed paper; Paper ID 3371
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2026

Learning Health Systems & Clinical AI · Peer-reviewed full conference paper

EHR-based Rescue Surveillance for Sepsis-triggered Deterioration in Gynecologic Cancer

This study evaluated whether concurrent sepsis identifies a high-risk subgroup among gynecologic malignancy admissions and whether EHR-derived early warning can support learning-health-system rescue surveillance. Sepsis-positive admissions had substantially elevated mortality. A temporally validated early-warning mode…

AMIA 2026 Annual SymposiumAccepted; Paper ID 15150; proceedings resubmission; AMIA notes papers/student papers indexed in PubMed Central
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2026

Maternal AI & Decision Support · Peer-reviewed full conference paper

Deployability-first Maternal Early Warning for Critical Deterioration in Pregnancy-related Hospitalizations

This work tested whether maternal deterioration prediction remains useful when restricted to signals plausibly available in real time and when evaluated under explicit alert-burden constraints. The model achieved a high-specificity, low-burden escalation signal but low sensitivity, showing that available early signals…

AMIA 2026 Annual SymposiumAccepted; Application ID 15761; proceedings resubmission; AMIA notes papers/student papers indexed in PubMed Central
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2026

Perinatal AI Validation · Peer-reviewed full conference paper

A Leakage-proof Benchmark and Conformal Selective Triage for EHG-based Preterm Birth Prediction

This paper formally quantified evaluation leakage in electrohysterogram-based preterm birth prediction. Under leakage-proof patient-independent validation, apparent discrimination collapsed to near chance, indicating that many published performance claims are likely leakage artifacts. Class-conditional conformal selec…

IEEE EMBC 2026Accepted for presentation; Full Paper #4188
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2026

Global Reproductive Health Equity · Accepted peer-reviewed conference abstract/paper

Digital Reproductive Access Cascade, Contraceptive Equity, and Quantified Inferential Validity Across DHS Countries

This multicountry DHS study developed the Digital Reproductive Access Cascade (DRA-C), a reproductive epidemiology instrument linking mobile ownership, smartphone/internet access, active digital engagement, and direct family-planning messaging to contraceptive outcomes. The analysis found plausible information-to-acti…

American Society for Reproductive Medicine Scientific Congress & Expo 2026Accepted; Paper ID 31093
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2026

Global Maternal Health Systems · Peer-reviewed poster/paper

From Antenatal Contact to Safer Birth: High Antenatal Continuity Readiness and Non-facility Delivery

This multicountry DHS analysis created a high Antenatal Continuity Readiness Index using first-trimester initiation, four or more visits, skilled provider ANC, and facility-based ANC. Across 13 sub-Saharan African countries, higher readiness was associated with lower risk of non-facility delivery in most countries, de…

American Public Health Association Annual Meeting and Expo 2026Accepted; APHA Sexual and Reproductive Health Program; Paper ID 596427
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2026

Maternal Morbidity & Equity · Peer-reviewed conference paper

Structural Inequity and Severe Maternal Morbidity During Delivery Hospitalization in HCUP NIS 2021

This national survey-weighted analysis of delivery hospitalizations in HCUP NIS 2021 showed that refined nontransfusion severe maternal morbidity was strongly patterned by maternal age, race, payer, and neighborhood income. Weighted descriptive, relative-effect, and absolute-risk results converged, indicating a robust…

CityMatCH Leadership & MCH Epidemiology Conference 2026Peer-reviewed paper ID 77966
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2026

Trial Generalizability & Reproductive Justice · Roundtable abstract

Pregnancy/Lactation Exclusion in 75,091 Oncology Trials: Text-to-Estimand Generalizability Audit

This project built an auditable atlas converting oncology-trial eligibility text into reproductive restriction phenotypes and generalizability-loss metrics. Pregnancy and lactation exclusions were common and patterned by intervention class, era, and geography, enabling minimum-necessary restriction redesign and policy…

Joint Statistical Meetings 2026Abstract Number 3417
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2026

Women’s Health AI & Explainability · Refereed conference presentation

AI-derived Reproductive Phenotypes and LLM-generated Risk Narratives for Early Multimorbidity among U.S. Women

This analysis used national reproductive, chronic-disease, socioeconomic, and mental-health data to derive latent phenotypes and predict early multimorbidity among U.S. women. SHAP explanations and LLM-generated narratives translated risk predictions into patient-facing language without inventing conditions, demonstra…

Symposium on Data Science and Statistics 2026Refereed; Abstract No. 5022
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2026

Life-course Reproductive Epidemiology · Refereed conference presentation

Adverse Reproductive Life-course Patterns and Multi-system Multimorbidity in U.S. Women Aged 20–44 Years

This nationally representative analysis examined whether adverse reproductive histories mark early multisystem cardiometabolic-renal multimorbidity and depression among young U.S. women. The work positions reproductive history as a life-course signal for preventive primary-care and maternal medicine strategies.

Symposium on Data Science and Statistics 2026Refereed; Abstract No. 5016
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2026

Measurement Error & Maternal Morbidity · Conference submission / proof summary

Accounting for Obesity Measurement Error in Severe Maternal Morbidity Research: HC-LES Analysis of 3.49 Million U.S. Deliveries

This project developed a Hospital-Calibrated Latent Evidence Score to reduce obesity misclassification in administrative obstetric data. The model integrates ICD-10 obesity code families, severity-weighted evidence, and hospital-level shrinkage to identify latent adiposity phenotypes and quantify bias in severe matern…

The Obesity Society 2026Submission proof; Track 4 Population Health
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2025

Global Maternal Mortality Policy · Manuscript / preprint with DOI

Institutional Delivery Coverage and Maternal Mortality: Global Country-year Fixed-effects Analysis

This longitudinal ecological panel analysis estimated within-country associations between institutional delivery coverage and maternal mortality over time. The primary fixed-effects model found that higher institutional delivery coverage was associated with lower subsequent maternal mortality, but sensitivity analyses…

SSRN; journal under review noted in manuscript fileSSRN DOI 10.2139/ssrn.6378368; under-review manuscript noted in file
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2025

Intrapartum Care & Newborn Survival · Manuscript / preprint; accepted note in file

Beyond Facility Birth: Effective Intrapartum Care Gaps and Early Newborn Survival in Nigeria

This study examined whether facility birth and skilled attendance translate into effective intrapartum capability in Nigeria. Despite high skilled attendance among facility births, early neonatal survival varied substantially by wealth and region, suggesting that remaining deaths reflect timely escalation, functional …

Birth / medRxiv record noted in fileRecord 6637886; preprint DOI 10.1101/2025.11.24.25340930 noted in file
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2025

Causal Perinatal Epidemiology · Accepted manuscript / preprint noted in file

Survey-weighted TMLE with Super Learner for Pregnancy Intention and Preterm Birth in the U.S. NSFG

This study estimated the marginal effect of unintended pregnancy on preterm birth and tested whether pregnancy intention improves risk stratification. Survey-weighted TMLE estimated a modest positive effect but with overlap limitations and sensitivity to residual confounding. Super Learner improved ranking and net ben…

Biology Methods and Protocols; medRxiv DOI noted in fileAccepted manuscript note in file; preprint DOI 10.1101/2025.11.25.25341033
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2025

Maternal-Fetal Imaging & AI · Electronic poster abstract

Multimodal AI-augmented Radiomics and Spectral Doppler Ultrasound for Early Prediction of Pre-eclampsia

This specialist maternal-fetal medicine output examined multimodal AI-augmented radiomics and spectral Doppler ultrasound for early pre-eclampsia prediction, connecting imaging biomarkers to interpretable obstetric risk stratification.

Ultrasound in Obstetrics & Gynecology / ISUOG World Congress 2025Electronic poster abstract EP16.66; DOI 10.1002/uog.70091 noted in prior CV/letter materials
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2025

Statistical Education & Reproducible Research · Curriculum and in-class teaching workshop paper

Teaching Longitudinal Linear Mixed Models End-to-End: A Reproducible Case Study in Mouse Body-weight Growth

This teaching paper provides an end-to-end reproducible workflow for longitudinal linear mixed models, moving from data reshaping and visualization to model selection, diagnostics, and interpretable contrasts. It is designed for biostatistics, epidemiology, and applied statistics teaching.

arXivDOI 10.48550/arXiv.2511.14523
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