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. 2026 Jan 30;15:e80911. doi: 10.2196/80911

Table 3.

PrEP (pre-exposure prophylaxis) Epidemiology, Modeling, and Surveillance (PREMISE) anticipated timeline and research activities across the 5-year grant perioda.

Activities Year Data source Planned analyses

1 2 3 4 5


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Objective 1: Longitudinal PrEPb provision analyses

Descriptive analyses of PrEP modality (TDFc, TAFd, and LAIe) by race







National PrEP database Descriptive and exploratory longitudinal cohort

10-year longitudinal patterns of PrEP use







National PrEP database Descriptive and exploratory longitudinal cohort

Analyses of LAI-PrEP users and retention in care







National PrEP database Descriptive and exploratory longitudinal cohort
Objective 2: Quasi-experiments of PrEP policies and programs

Develop program and policy dataset






Health jurisdiction surveys, public records, and legal extraction data DIDf or DDDg

Conduct quasi-experiments on PrEP initiation: EHEh, PrEP DAPi, Medicaid Expansion, and pharmacist-provided PrEP




National PrEP database, program, and policy dataset DID or DDD

Assess policy effects on PrEP initiation: PrEP DAP and Medicaid





National PrEP database, program, and policy dataset DID or DDD

Assess program and policy effects on retention in PrEP care




National PrEP database, program, and policy dataset DID or DDD
Objective 3: Model epidemic impact and cost-effectiveness analyses

Modeling program and policy long-term impact





National PrEP database, program, and policy dataset Mathematical modeling

Cost-effectiveness analyses





National PrEP database, program, and policy dataset Mathematical modeling
Dissemination phase

AIDSVu blog posts and website infographics
National PrEP database, program, and policy dataset N/Aj

aThis table outlines the planned research activities for the 5-year grant period, detailing the research objectives, corresponding analyses, required data sources, and the anticipated year in which each activity will be conducted.

bPrEP: pre-exposure prophylaxis.

cTDF: tenofovir disoproxil fumarate.

dTAF: tenofovir alafenamide fumarate.

eLAI: long-acting injectable.

fDID: difference-in-differences.

gDDD: difference-in-difference-in-differences.

hEHE: Ending the HIV Epidemic.

iPrEP DAP: Pre-Exposure Prophylaxis Drug Assistance Program.

jN/A: not applicable.