Raul U. Hernandez-Ramirez, PhD
Research Scientist in Biostatistics (CMIPS)Cards
Additional Titles
Director, Dissemination and Implementation Science Methods (DISM) Core, Center for Interdisciplinary Research on AIDS
Affiliated Faculty, Yale Institute for Global Health
Contact Info
About
Titles
Research Scientist in Biostatistics (CMIPS)
Director, Dissemination and Implementation Science Methods (DISM) Core, Center for Interdisciplinary Research on AIDS; Affiliated Faculty, Yale Institute for Global Health
Biography
Raul U. Hernandez-Ramirez is a Research Scientist in Biostatistics at the Center for Methods in Implementation and Prevention Science (CMIPS) and Director of the Dissemination and Implementation Science Methods (DISM) Core at the Center for Interdisciplinary Research on AIDS (CIRA). His research mainly focuses on HIV/AIDS, cancer, and implementation science (IS). He also conducts research to develop and apply causal inference methods for the evaluation of HIV prevention interventions and methods to account for exposure uncertainty in environmental health studies. He collaborates on research projects and grants in New Haven and other settings in the US, as well as in low- and middle-income countries, including Mexico and others. He is interested in adapting/developing and applying interventions to increase the uptake of evidence-based interventions and practices for prevention and care of HIV and of cancer (e.g., follow up care for abnormal cervical cancer screens) and strategies to enable their implementation. He is a member of the Yale Cancer Center (YCC) and the Yale Institute for Global Health (YIGH).
He provides expertise, consultations, and technical assistance and seminars and trainings on IS and research methods, design, and analysis to CIRA affiliates through CIRA’s DISM core and and projects in Ending the HIV Epidemic (EHE) priority areas through the CIRA affiliated IS hub R3EDI (Rigorous, Rapid, & Relevant Evidence aDaptation & Implementation to EHE).
He completed a PhD in Public Health (Chronic Disease Epidemiology) at Yale and conducted part of his doctoral dissertation research as a predoctoral visiting fellow at the National Cancer Institute (NCI). He subsequently completed the Training Institute for Dissemination and Implementation Research in Cancer (TIDIRC) and the Multilevel Intervention Training Institute (MLTI) from NCI, as well as the training in optimization of multicomponent interventions using the Multiphase Optimization Strategy (MOST) by Dr. Linda Collins.
Before coming to Yale, he gained substantial research experience in nutrition, environment health, and cancer at the National Institute of Public Health of Mexico. He spent several years in Mexico working as a researcher and instructor and was the project coordinator, data manager, and main statistician for a multistate study. He previously obtained a MSc in Epidemiology and a BSc in Nutrition.
Appointments
Biostatistics
Research ScientistPrimary
Other Departments & Organizations
Education & Training
- PhD
- Yale University, Public Health (Chronic Disease Epidemiology) (2018)
- MPhil
- Yale University, Public Health (Chronic Disease Epidemiology) (2016)
- Predoctoral Visiting Fellow
- National Cancer Institute (2016)
Research
Overview
Medical Research Interests
Public Health Interests
ORCID
0000-0001-8272-1474
Research at a Glance
Yale Co-Authors
Publications Timeline
Research Interests
Donna Spiegelman, ScD
Amy Justice, MD, PhD
Laura Forastiere, PhD
Sten H. Vermund, MD, PhD
Alyssa Ann Grimshaw, MBA, MLIS, MPH
Kate Nyhan, MLS
Stomach Neoplasms
Neoplasms
HIV
Global Health
Publications
2025
Fish consumption and gastric cancer within the Stomach cancer Pooling (StoP) Project
Franchi C, Ardoino I, Mandelli S, Patel L, Pelucchi C, Bonzi R, Camargo M, Rabkin C, Liao L, Sinha R, Johnson K, Hu J, Zhang Z, Palli D, Ferraroni M, Negri E, Turati F, Yu G, Lunet N, Morais S, López-Carrillo L, Tsugane S, Hidaka A, Malekzadeh R, Zaridze D, Maximovitch D, Vioque J, Gonzalez-Palacios S, Ward M, Aragonés N, Castaño-Vinyals G, Curado M, Dias-Neto E, Hamada G, Hernández-Ramirez R, Pakseresht M, Pourfarzi F, Mu L, Lagiou A, Lagiou P, López-Cervantes M, Dolci A, Boccia S, Pastorino R, Boffetta P, D’Avanzo B, La Vecchia C. Fish consumption and gastric cancer within the Stomach cancer Pooling (StoP) Project. Scientific Reports 2025, 15: 13099. PMID: 40240417, PMCID: PMC12003686, DOI: 10.1038/s41598-025-96658-4.Peer-Reviewed Original ResearchMeSH Keywords and ConceptsConceptsRisk of gastric cancerCancer riskAssociated with gastric cancer riskFamily history of gastric cancerStomach cancer PoolingStomach cancer riskHistory of gastric cancerGastric cancer riskIncreased intake of fishBody mass indexCase-control studyIntake of fishGeographical differencesFish consumptionGastric cancerPooling ProjectFamily historyMass indexCancer deathCanned fish consumptionFish intakeEnergy intakeMeta-analysisIncreased intakeHelicobacter pylori infectionExposure measurement error in air pollution health effect studies: a pooled analysis of personal exposure validation studies in 17 communities across the United States
Zhang B, Eum K, Szpiro A, Zhang N, Hernández-Ramírez R, Spiegelman D, Wang M, Suh H. Exposure measurement error in air pollution health effect studies: a pooled analysis of personal exposure validation studies in 17 communities across the United States. International Journal Of Environmental Health Research 2025, ahead-of-print: 1-11. PMID: 40191987, DOI: 10.1080/09603123.2025.2488481.Peer-Reviewed Original ResearchConceptsAmbient concentrationsNearest monitorExposure measurement errorMeasurements of PM<sub>2.5</sub>Personal PM<sub>2.5</sub>Air pollution health effects studiesPersonal exposureHealth effects of air pollutionEffects of air pollutionHealth effects studiesAdverse health effectsExposure surrogatesAir pollutionHealth risksCdExposure indicatorsNiAssociated with health risksLinear mixed modelsQuantify measurement errorMixed modelsConcentrationExposurePbMonthly averagesBarriers and facilitators to a combined strategy of HPV vaccination and cervical cancer screening among Mexican women
León-Maldonado L, Cabral A, Pages G, Brown B, Allen-Leigh B, Lazcano-Ponce E, Bosch F, Spiegelman D, Torres-Ibarra L, Hernández-Ramírez R, Egger E, Rivera-Paredez B, Salmerón J. Barriers and facilitators to a combined strategy of HPV vaccination and cervical cancer screening among Mexican women. Human Vaccines & Immunotherapeutics 2025, 21: 2483018. PMID: 40172917, PMCID: PMC11970787, DOI: 10.1080/21645515.2025.2483018.Peer-Reviewed Original ResearchMeSH Keywords and ConceptsConceptsInterpersonal-level barriersHigh-quality careFacilitators to participationExperiences of stigmaCervical cancer screeningLack of timeCommunity-level facilitatorsConstant comparative methodPublic health interventionsHealth center personnelInstitutional-level barriersSeverity of cervical cancerHPV-based screeningSemi-structured interviewsCancer screeningHealth interventionsPerceived severity of cervical cancerHealth centersPhone remindersSocioecological modelIntrapersonal levelInconvenient hoursFamily encouragementPerceived severityHPV vaccinationRacism-related stress, health outcomes, substance use, and PrEP attitudes among Asian sexual minority men
Chin L, Kershaw T, Hernandez-Ramirez R, Ramos S. Racism-related stress, health outcomes, substance use, and PrEP attitudes among Asian sexual minority men. Scientific Reports 2025, 15: 6994. PMID: 40016341, PMCID: PMC11868514, DOI: 10.1038/s41598-025-91794-3.Peer-Reviewed Original ResearchAltmetricMeSH Keywords and ConceptsConceptsAsian American Racism-Related Stress InventoryRacism-related stressSexual minority menHealth outcomesIncreased substance useMinority menSubstance useBehavioral Risk Factor Surveillance SystemRisk Factor Surveillance SystemSexual minority identitySecondary analysis of dataHIV self-testingNational Survey on Drug Use and HealthDecreased psychological well-beingDrug Use and HealthPsychological well-beingMinority identityPrEP attitudesRacial inequalityIntersecting factorsPhysical healthSocietal discriminationPolitical climateStress InventoryRacial discrimination
2024
Cultural Spanish Adaptation, Factor Structure, and Reliability of Implementation Science Instruments for Suicide Prevention
Pérez-Matus S, Hernández-Ramírez R, González-Forteza C, Benjet C, Villalobos-Gallegos L. Cultural Spanish Adaptation, Factor Structure, and Reliability of Implementation Science Instruments for Suicide Prevention. Psychological Services 2024 PMID: 39541544, DOI: 10.1037/ser0000914.Peer-Reviewed Original ResearchConceptsRoot mean square error of approximationComparative fit indexConfirmatory factor analysis indicesEvidence-based practiceMexican-Spanish versionTucker-Lewis fit indexConfirmatory factor analysisSuicide preventionInternal consistencyImplementation of evidence-based practicesSpecialized mental health careSpanish versionFit indicesMental health careCross-cultural adaptationStandardized Root Mean SquareValues of comparative fit indexPreliminary psychometric propertiesAt-risk populationsError of approximationFactor structureGatekeeper interventionTraining interventionFeasibility measuresHealth careNavigating grey areas in HIV and mental health implementation science
Harkness A, Giusto A, Hamilton A, Hernandez‐Ramirez R, Spiegelman D, Weiner B, Beidas R, Larson M, Lippman S, Wainberg M, Smith J. Navigating grey areas in HIV and mental health implementation science. Journal Of The International AIDS Society 2024, 27: e26271. PMID: 38923301, PMCID: PMC11197965, DOI: 10.1002/jia2.26271.Peer-Reviewed Original ResearchAltmetricMeSH Keywords and ConceptsConceptsImplementation scienceNational Institute of Mental HealthImplementation researchMental healthImplementation strategiesImpact of implementation strategiesHIV Epidemic goalsInstitute of Mental HealthUNAIDS targetsFederal fundersResearch workforceHIV transmissionEvidence-basedGlobal HIVUnited StatesHIVCapacity buildingRecipient's perspectiveNational InstituteHealthExpert guidanceInterventionHigh-impact scienceControl groupOvercome challengesThe protective effect of dietary folate intake on gastric cancer is modified by alcohol consumption: A pooled analysis of the StoP Consortium
Gonzalez‐Palacios S, Compañ‐Gabucio L, Torres‐Collado L, Oncina‐Canovas A, García‐de‐la‐Hera M, Collatuzzo G, Negri E, Pelucchi C, Rota M, López‐Carrillo L, Lunet N, Morais S, Ward M, Martin V, Lozano‐Lorca M, Malekzadeh R, Pakseresht M, Hernández‐Ramírez R, Bonzi R, Patel L, López‐Cervantes M, Rabkin C, Tsugane S, Hidaka A, Trichopoulou A, Karakatsani A, Camargo M, Curado M, Zhang Z, La Vecchia C, Boffetta P, Vioque J. The protective effect of dietary folate intake on gastric cancer is modified by alcohol consumption: A pooled analysis of the StoP Consortium. International Journal Of Cancer 2024, 155: 1367-1375. PMID: 38757245, PMCID: PMC11326987, DOI: 10.1002/ijc.35004.Peer-Reviewed Original ResearchCitationsAltmetricConceptsDietary folate intakeHigh folate intakeFolate intakeRisk of GCOdds ratioGastric cancerAlcoholic drinks/dayAlcohol consumptionEffect of dietary folate intakeEffect of folate intakeQuartile of folate intakeFood frequency questionnaireCalculate adjusted odds ratiosCase-control studyConfidence intervalsAdjusted odds ratiosFrequency questionnaireGC casesGC riskPooled analysisQuartile incrementLowest quartileLow riskLinear mixed modelsModifiable factorsAssessing Direct and Spillover Effects of Intervention Packages in Network-randomized Studies
Buchanan A, Hernández-Ramírez R, Lok J, Vermund S, Friedman S, Forastiere L, Spiegelman D. Assessing Direct and Spillover Effects of Intervention Packages in Network-randomized Studies. Epidemiology 2024, 35: 481-488. PMID: 38709023, DOI: 10.1097/ede.0000000000001742.Peer-Reviewed Original ResearchCitationsConceptsIntervention packageEffectiveness of interventional packageImprove intervention deliveryPeer education interventionHIV prevention trialsPeer educator trainingMarginal structural modelsPublic health impactHIV risk behaviorsIntervention deliveryIntervention NetworkEducational interventionParticipant visitsPrevention trialsFollow-up visitRisk behaviorsHealth impactsInterventionEducational trainingParticipantsSpillover effectsVisitsHIVExposed networksPeerThe association between dietary fiber intake and gastric cancer: a pooled analysis of 11 case–control studies
Collatuzzo G, Cortez Lainez J, Pelucchi C, Negri E, Bonzi R, Palli D, Ferraroni M, Zhang Z, Yu G, Lunet N, Morais S, López-Carrillo L, Zaridze D, Maximovitch D, Guevara M, Santos-Sanchez V, Vioque J, Garcia de la Hera M, Ward M, Malekzadeh R, Pakseresht M, Hernández-Ramírez R, Turati F, Rabkin C, Liao L, Sinha R, López-Cervantes M, Tsugane S, Hidaka A, Camargo M, Curado M, Zubair N, Kristjansson D, Shah S, La Vecchia C, Boffetta P. The association between dietary fiber intake and gastric cancer: a pooled analysis of 11 case–control studies. European Journal Of Nutrition 2024, 63: 1857-1865. PMID: 38687390, PMCID: PMC11329417, DOI: 10.1007/s00394-024-03388-w.Peer-Reviewed Original ResearchCitationsAltmetricConceptsDietary fiber intakeCase-control studyFiber intakeQuartiles of dietary fiber intakeOdds ratioStomach cancer PoolingHospital-based case-control studyQuartile of fiber intakeConfidence intervalsFood frequency questionnaireHistological typeMethodsWe pooled dataIntake of dietary fiberMultivariate logistic regression modelAnatomical sitesLogistic regression modelsVegetable intakeResultsThe ORCancer mortalityFrequency questionnaireSocioeconomic statusStratified analysisDietary factorsRegression modelsPooled analysisDietary intake of vitamin C and gastric cancer: a pooled analysis within the Stomach cancer Pooling (StoP) Project
Sassano M, Seyyedsalehi M, Collatuzzo G, Pelucchi C, Bonzi R, Ferraroni M, Palli D, Yu G, Zhang Z, López-Carrillo L, Lunet N, Morais S, Zaridze D, Maximovich D, Martín V, Castano-Vinyals G, Vioque J, González-Palacios S, Ward M, Malekzadeh R, Pakseresht M, Hernández-Ramirez R, López-Cervantes M, Negri E, Turati F, Rabkin C, Tsugane S, Hidaka A, Lagiou A, Lagiou P, Camargo M, Curado M, Boccia S, La Vecchia C, Boffetta P. Dietary intake of vitamin C and gastric cancer: a pooled analysis within the Stomach cancer Pooling (StoP) Project. Gastric Cancer 2024, 27: 461-472. PMID: 38436761, PMCID: PMC11016516, DOI: 10.1007/s10120-024-01476-8.Peer-Reviewed Original ResearchCitationsAltmetric