Interprofessional collaboration improves linkages to primary care: a longitudinal analysis.

The first steps of the HIV care continuum include patients finding access to HIV testing and primary care. Psychosocial providers ("providers"), such as social workers, health educators, and outreach workers comprise a workforce tasked with linking patients to HIV testing and primary care. This study examines longitudinal associations between provider- and organization-level factors and linkage to HIV testing and primary care. The sample included 245 providers in 36 agencies in New York City. We used longitudinal data (baseline and 12- and 24-months follow-ups) and multilevel ordinal logistic regression to examine associations between factors distributed in three theoretical socioecological domains: individual (demographic and HIV training characteristics); relationship (interprofessional collaboration); and agency (size and capacity), and frequency of HIV testing and primary care linkages. Approximately 30% of providers linked 20 or more patients to HIV testing or HIV primary care in the previous six months. Providers' higher endorsement of interprofessional collaboration at 12 months, formal HIV training, younger age, and Latinx ethnicity had higher odds of making more linkages to HIV testing and HIV primary care at 24 months. Training providers in interprofessional collaboration principles and practice and basic HIV knowledge may improve the frequency of linkages to HIV care continuum services.