Yiyang Liu

Yiyang Liu,

Research Assistant Professor

Department: Department of Epidemiology
Business Phone: (352) 273-5468
Business Email: yliu26@ufl.edu

About Yiyang Liu

I see myself as an epidemiologist and data scientist specializing in HIV and substance use research. I have rich experience working with OneFlorida+ (OneFL) electronic health records (EHR) and contributed to several HIV-related projects using OneFL EHRs. In one of my first-authored papers, I have developed and validated a rule-based HIV computable phenotype algorithm that leverages the multi-domain structured electronic health record (EHR) data and has identified over 70k patients with confirmed HIV diagnoses. Building on this virtual HIV cohort, I have been awarded an industry fund as a primary investigator (PI) to examine long-acting HIV antiretroviral therapy uptake among people with HIV. Additionally, I have participated as a co-investigator on a UF Clinical and Translational Science Institute (CTSI) pilot grant and led efforts in one of the aims to identify and characterize PrEP users using OneFL EHRs. I am currently preparing an R34 grant aiming to build an EHR-based HIV prediction model to better identify patients who might benefit from PrEP, especially among women.

Teaching Profile

Courses Taught
2023
PHC6941 MPH Applied Practice Experience
2023-2024
PHC7065 Advanced Skills in Epidemiological Data Management
2024
PHC6971 Research for Master’s Thesis
2024
PHC6945 Public Health Practicum

Board Certifications

  • Great Teaching for New Faculty Certificate
    UF Center for Teaching Excellence

Research Profile

Open Researcher and Contributor ID (ORCID)

0000-0002-5519-3853

Areas of Interest
  • Alcohol and substance use
  • HIV
  • HIV Prevention
  • Mental Health
  • data science
  • electronic health records

Publications

2024
Comorbidity Burden and Health Care Utilization by Substance use Disorder Patterns among People with HIV in Florida
AIDS and Behavior. [DOI] 10.1007/s10461-024-04325-y.
2024
Demographics, Trends, and Clinical Characteristics of HIV Pre-Exposure Prophylaxis Recipients and People Newly Diagnosed with HIV from Large Electronic Health Records in Florida
AIDS Patient Care and STDs. 38(1):14-22 [DOI] 10.1089/apc.2023.0220. [PMID] 38227279.
2022
Longitudinal trajectories of HIV care engagement since diagnosis among persons with HIV in the Florida Ryan White program
AIDS and Behavior. 26(10):3164-3173 [DOI] 10.1007/s10461-022-03659-9. [PMID] 35362911.
2022
Testā€retest reliability of a new assessment to detect detailed temporal patterns of polysubstance use
International Journal of Methods in Psychiatric Research. 31(3) [DOI] 10.1002/mpr.1912. [PMID] 35684977.
2021
Associations amongst form of cocaine used (powder vs crack vs both) and HIV-related outcomes
Addictive Behaviors Reports. 14 [DOI] 10.1016/j.abrep.2021.100374. [PMID] 34938835.
2021
Cocaine and Marijuana Polysubstance Use and Cocaine Use Disorder: Investigating Mediated Effects through Patterns of Cocaine Use
Journal of Dual Diagnosis. 17(1):23-33 [DOI] 10.1080/15504263.2020.1849887. [PMID] 33300839.
2020
Exposure to Medicines in the Family Medicine Cabinet: Is It a Harbinger of Later Opioid Dependence?
Substance Use & Misuse. 55(10):1709-1715 [DOI] 10.1080/10826084.2020.1756856. [PMID] 32394779.
2020
Prescription Stimulant Use and Associated Risk Factors for Non-oral Use among 10 to 18 Year Olds
Journal of Psychoactive Drugs. 52(5):421-432 [DOI] 10.1080/02791072.2020.1795326.
2019
Motives for prescription stimulant use by patterns of non-medical use
Journal of Substance Use. 24(4):455-460 [DOI] 10.1080/14659891.2019.1604838. [PMID] 31814798.
2018
The importance of considering polysubstance use: lessons from cocaine research
Drug and Alcohol Dependence. 192:16-28 [DOI] 10.1016/j.drugalcdep.2018.07.025. [PMID] 30195242.

Grants

Apr 2023 ACTIVE
Artificial Intelligence and Counterfactually Actionable Responses to End HIV (AICARE-HIV)
Role: Co-Investigator
Funding: NATL INST OF HLTH NIAID
Nov 2022 ACTIVE
Interest and uptake of long-acting antiretroviral therapy (ART) among people with HIV in Florida
Role: Co-Project Director/Principal Investigator
Funding: MERCK AND COMPANY INC RES LAB
Aug 2022 ACTIVE
CODUS – HIV outcome quality measure evaluation and stigma
Role: Co-Investigator
Funding: FL DEPT OF HLTH via US HLTH RESOURCES AND SERV ADMN HIV/AIDS

Education

PhD in Epidemiology
2020 · University of Florida
Master of Public Health
2015 · Tulane University
Bachelor of Business Administration
2013 · Beijing University of Chinese Medicine

Contact Details

Phones:
Business:
(352) 273-5468
Emails:
Business:
yliu26@ufl.edu
Addresses:
Business Mailing:
PO Box 100231
GAINESVILLE FL 32610
Business Street:
2004 MOWRY RD
GAINESVILLE FL 32610