HIV Screening Rates among Medicaid Enrollees Diagnosed with Other Sexually Transmitted Infections

Area of Science:

• Public Health
• Infectious Disease Epidemiology
• Health Services Research

Background:

• Sexually transmitted infections (STIs) represent a significant public health burden in the U.S., with millions diagnosed annually.
• The co-occurrence of STIs increases HIV transmission risk, underscoring the CDC's recommendation for routine HIV screening in STI-diagnosed individuals.
• Despite recommendations, HIV screening rates among patients with STIs remain suboptimal in many healthcare settings.

Purpose of the Study:

• To determine the proportion of Medicaid enrollees diagnosed with an STI who were screened for HIV.
• To identify factors associated with HIV screening in this population.
• To pinpoint critical intervention points for increasing HIV screening among individuals with STIs.

Main Methods:

• Retrospective analysis of Medicaid claims data from 29 states in 2009.
• Included individuals with primary diagnoses of chlamydia, gonorrhea, syphilis, or pelvic inflammatory disease; HIV-positive individuals were excluded.
• Used logistic regression to examine correlates of HIV screening, controlling for demographic and clinical variables.

Main Results:

• Approximately 43% of STI-diagnosed participants received HIV screening.
• Younger individuals (20-24 years), females, those in metropolitan areas, and individuals with syphilis were more likely to be screened.
• Patients diagnosed in emergency departments were less likely to be screened compared to those diagnosed in physician offices.

Conclusions:

• HIV screening prevalence among STI-diagnosed individuals in the Medicaid population is lower than recommended, representing missed opportunities for early HIV detection.
• Targeted interventions are vital to improve HIV screening rates in this at-risk population.
• Increased screening facilitates timely HIV diagnosis, linkage to care, and prevention of further transmission.