Leveraging Electronic Health Record Data in a Risk Prediction Model to Increase HIV PrEP Intake in Primary Care

Study Summary

Kaiser Permanente Northern California (KPNC) has been a national leader in implementation of HIV preexposure prophylaxis (PrEP), a daily antiretroviral pill that is more than 99% effective in preventing HIV acquisition. However, many patients at risk for HIV at KPNC are not yet using PrEP, resulting in preventable infections each year. In prior work, the study team developed and validated a prediction model that used electronic health record (EHR) data from 3.7 million KPNC members to identify patients at high risk of HIV acquisition but not using PrEP. The model substantially outperformed models based only on CDC criteria for PrEP use, particularly for Black patients, a population with high HIV incidence and lower PrEP uptake. The objective of this proposal is to evaluate the feasibility of implementing this EHR-based model at the point of care to increase PrEP referrals and uptake at KPNC. The specific aims of this project are to 1) conduct provider focus groups to identify barriers and facilitators to PrEP referrals and to optimize the delivery mechanism of our clinical decision support intervention, 2) evaluate the feasibility and acceptability of a clinical decision support intervention for primary care providers (PCPs) to increase PrEP referrals and uptake among high-risk patients, and 3) assess patient- and provider-based characteristics associated with PrEP referrals and uptake. To accomplish these aims, the study team proposes a randomized controlled trial of a clinical decision support intervention for PrEP, which involves alerting KP San Francisco (KPSF) Adult and Family Medicine PCPs about patients identified by our prediction model as being at high risk for HIV acquisition prior to in-person clinic visits. We will compare PrEP referrals and uptake among patients who are seen by PCPs randomized to intervention and usual care study arms using an intention-to-treat analysis.

Primary Outcome

linkage to PrEP care within 90 days of the first encounter, defined as first of following: PrEP discussion (ICD-10 Z29.8), referral (measured by PrEP referrals and appointments booked through e-consult, a provider-to-provider community platform embedded in the EHR ), or prescription fill for emtricitabine coformulated with tenofovir disoproxil fumarate or with tenofovir alafenamide

Interventions

• BEHAVIORAL Point-of-care decision support intervention