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Xuejuan NingXN
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Xuejuan Ning

@xuejuanning

I investigate climate, environmental exposures, and child health using epidemiologic methods and population data.

United States
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What I'm looking for

I'm seeking opportunities to apply epidemiologic and biostatistical methods to climate, environmental, and child health research, with collaborative teams that translate rigorous evidence into public health and policy impact.

I'm a PhD candidate at Yale studying how climate and environmental exposures shape child and population health. My work examines tropical cyclone exposure and adverse birth outcomes, including urban-rural and social vulnerability disparities.

At Yale School of Public Health, I've led home-visit data collection for a Long Island 1,4-dioxane exposure study and investigated pediatric differentiated thyroid cancer trends, presentation, and treatment disparities using national SEER data.

As a biostatistician at ECHO-DAC, I led multi-cohort analyses across up to 69 cohorts on prenatal smoking, PFAS, pregnancy conditions, autism-related outcomes, missing data, and socioeconomic variables. I've written methods sections and contributed to peer-reviewed publications using R, Stata, SAS, and reproducible data harmonization approaches.

I've also contributed to sustainable healthcare research at Yale's Center on Climate Change and Health and land-use analysis at Yale Law School. I bring experience in epidemiology, systematic reviews, data management, statistical modeling, and translating evidence for policy engagement.

Experience

Work history, roles, and key accomplishments

LS
Current

Research Assistant

Law, Environment & Animals Program, Yale Law School

Sep 2025 - Present (1 year)

Compiled and harmonized state-level land-use data from USDA ERS, USDA NASS, USGS NLCD, and Census of Agriculture to support evidence-based analysis of agricultural land allocation. Assessed land use associated with animal agriculture and documented assumptions, data gaps, and classification choices in concise internal memos.

YH

Lancet Commission on Sustainable Healthcare Scholar

Yale Center on Climate Change and Health

Aug 2023 - Aug 2025 (2 years)

Collaborated with clinicians, health policy experts, and graduate students on projects focused on reducing the healthcare system's carbon emissions, including an umbrella review on measures to reduce low value care, examining progress on COP26 health programme, and the relationship between healthcare workforce density and climate risk indices.

DO

Doctoral Student

Department of Environmental Health Sciences, Yale School of

Jul 2024 - Aug 2024 (1 month)

Led data collection efforts for around 70 home visits, including water sample collection and questionnaires for a Superfund center study on 1,4-Dioxane exposure in Long Island, New York. Coordinated home visit preparation and sample storage with a team.

EA

Biostatistician

Environmental influences on Child Health Outcomes Data Analy

Jul 2019 - Jul 2022 (3 years)

Led collective analyses of data from multiple cohorts to examine associations of prenatal smoking, pregnancy conditions, and PFAS exposures with child outcomes. Performed analyses using R, Stata, and SAS, and authored method sections of manuscripts.

EJ

Research Assistant

Epidemiology Research Group in Organ Transplantation, Johns

Nov 2018 - May 2019 (6 months)

Constructed analytical data by matching transplant recipients with controls on waitlist using incidence density sampling, and balanced covariates using inverse probability of treatment weighting to estimate survival benefit of deceased donor kidney transplantation using Stata. Compared the estimated survival benefit from this novel method with established methods and found comparable results.

IB

Research Assistant

Institute of Global Tobacco Control, Johns Hopkins Bloomberg

Jun 2018 - May 2019 (11 months)

Conducted random sampling to select venues to observe for smoke-free and point-of-sale compliance in Lanzhou and Qingdao, China. Assembled training materials and delivered training sessions for data collectors, performed data quality assurance and control check, and compiled descriptive statistics of compliance rate by venues and jurisdictions.

DO

Research Assistant

Department of Epidemiology, Johns Hopkins Bloomberg School o

Jun 2018 - May 2019 (11 months)

Investigated the paradoxical association of diabetes status with incident abdominal aortic aneurysm using Cox proportional hazard regression models. Evaluated the relationship between duration of incident diabetes and the risk of abdominal aortic aneurysm by modeling diabetes as a time-varying exposure.

DB

Research Assistant

Department of International Health, Johns Hopkins Bloomberg

Feb 2018 - Feb 2019 (1 year)

Modified literature search strategies for Cochrane, Embase, POPLINE, Web of Science and Scopus database for a systematic review on child and adolescent causes of deaths in low-and-middle income countries. Screened over 50,000 abstracts, reviewed over 500 full texts, and extracted data from over 20 articles.

DH

Research Assistant

Division of Pulmonary & Critical Care Medicine, Johns Hopkin

Jun 2018 - Aug 2018 (2 months)

Created a de-identified analytical dataset, codebook and double coded the analyses using R for a project evaluating the impact of physician orders for life-sustaining treatment (POLST) on hospital care. Authored method section of the manuscript.

DH

Research Assistant

Department of Epidemiology & Statistics, Peking University H

Dec 2016 - Jun 2017 (6 months)

Investigated the prospective association of sleep duration with the risk of significant weight gain, body mass index and waist circumference in participants from the China Koodrie Biobank (CKB) study using logistic regression models. Performed analyses using SAS and authored a manuscript.

BC

Intern

Beijing Chaoyang Disease Control Center

Jul 2016 - Oct 2016 (3 months)

Designed a questionnaire filling profile using Epidata3.1, inputted 120 questionnaires on a weight control program, and suggested staff do quality control on scene to guarantee questionnaires are correctly filled out. Completed a literature review on Pertussis, delivered an oral presentation, and engaged in epidemiological investigation on a Pertussis case.

GC

Intern

Global Health Department, Peking University Health Science C

Nov 2015 - Feb 2016 (3 months)

Investigated conference documents and reports on agenda, which consist of Implementation of the International Health Regulation (2005), Pandemic influenza preparedness, and Smallpox eradication, from Executive Boards meetings and World Health Assembly between 2013 and 2015. Generated four statement drafts regarding the above-mentioned agenda for National Health and Family Planning Commission.

BH

Intern

Beijing Shijitan Hospital

Feb 2015 - Feb 2016 (1 year)

Rotated between different departments, including Internal Medicine, Surgery, Pediatrics, Gynecology and Community Clinic. Shadowed doctors for ward rounds every day, helped with patients' admission and discharge, updated 10 patients' medical profile during their hospitalization, and served as second assistant in three surgeries in department of Surgery.

Education

Degrees, certifications, and relevant coursework

YS

Yale Graduate School of Arts & Sciences

Doctor of Philosophy, Environmental Health Sciences

Activities and societies: YCCCH Fellow: Lancet Commission on Sustainable Healthcare Scholar; Member of the International Society for Exposure Science (ISES) and the International Society for Environmental Epidemiology (ISEE)

Doctoral candidate in Environmental Health Sciences with a focus on climate change and child health. Currently pursuing PhD with research on environmental exposures and health outcomes.

JH

Johns Hopkins Bloomberg School of Public Health

Master of Health Science, Epidemiology

Grade: 3.96/4.00

Activities and societies: Awards: Nancy Fink Fund for Scholarship and Service

Master of Health Science in Epidemiology with a concentration in Cardiovascular Epidemiology. Graduated in May 2019 with a GPA of 3.96/4.00.

PC

Peking University Health Science Center

Bachelor of Medicine, Preventive Medicine

Grade: 3.48/4.00

Activities and societies: Awards: Second Prize Student Scholarship; Third Prize Student Scholarship

Bachelor of Medicine in Preventive Medicine. Graduated in July 2017 with a GPA of 3.48/4.00.

Tech stack

Software and tools used professionally

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