Scholars@Duke
John Gallis

John Gallis

Biostatistician, Senior
Biostatistics & Bioinformatics
Duke Box 2721, Durham, NC 27710
2424 Erwin Road Ste 1106, 11028A Hock Plaza, Durham, NC 27705

Overview

Overview
John currently collaborates with researchers and methodologists at the Duke Global Health Institute and the Duke Department of Biostatistics & Bioinformatics.  His varied research experience includes design and analysis of weight loss-related randomized controlled trials (RCTs), design and analysis of cluster randomized trials (cRCTs), and implementation of the multiphase optimization strategy (MOST).  Recently, he has primarily worked with researchers examining the effects of interventions on maternal mental health and child health and development.  His research interests include the design of cRCTs and analysis methods for clustered data, among many other interests.

Education
Master of Science (Sc.M.) in Biostatistics. Johns Hopkins Bloomberg School of Public Health               
Bachelor of Science (B.S.) in Mathematics: Southern Utah University

Links:
LinkedIn Profile: https://www.linkedin.com/in/john-gallis-2258b843/
Duke website: https://sites.duke.edu/johngallis/

Current Appointments & Affiliations

Recent Publications

Experience with the mobile health application 'mSaada' to facilitate home-based human papillomavirus testing in Western Kenya.

Journal Article BMC Glob Public Health · October 17, 2025 BACKGROUND: Cervical cancer screening using human papillomavirus (HPV) DNA testing is an essential component of prevention efforts. Countries with limited health care infrastructure need innovative strategies to make HPV-based screening feasible. Our team ... Full text Link to item Cite

Impacts of chronic suicidal ideation on parenting and child development: A longitudinal mother-child cohort study in Pakistan.

Journal Article Soc Sci Med · October 2025 Suicidal ideations (SI) among mothers are prominent and may denote risk for both the mother and her offspring. Suicide in low- and middle-income countries is understudied and undertheorized, with limited suicide prevention programs targeting local risk con ... Full text Link to item Cite

Effectiveness of a brief intervention and text-based booster in the emergency department to reduce harmful and hazardous alcohol use: A pragmatic randomized adaptive clinical trial in Moshi, Tanzania.

Journal Article PLoS Med · October 2025 BACKGROUND: Alcohol use contributes to over 3 million deaths annually. In Tanzania, there are no evidence-based culturally adapted interventions to address harmful alcohol use behaviors. Our hypothesis was that "Punguza Pombe Kwa Afya Yako" (PPKAY, Reduce ... Full text Open Access Link to item Cite
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Recent Grants

A randomized controlled trial of a novel, evidence-based algorithm for managing lower respiratory tract infection in a resource-limited setting

ResearchBiostatistician II · Awarded by National Institute of Allergy and Infectious Diseases · 2022 - 2027

Caregiver Coaching to Improve Outcomes of Young Autistic Children in Africa

ResearchBiostatistician · Awarded by National Institute of Mental Health · 2022 - 2027

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