[Prevalence of patients with HIV receiving outpatient medical care in Germany-an analysis based on secondary data]. / Häufigkeiten von Patienten mit HIV in der ambulanten Versorgung in Deutschland ­ Eine Analyse auf Basis von Sekundärdaten.

ABSTRACT

BACKGROUND: The Robert Koch Institute (RKI) annually publishes an estimate of the number of new HIV diagnoses and the total number of people diagnosed with HIV in Germany. So far, only medication prescription data have served as secondary data as a basis for such estimates. OBJECTIVES: In this study, we used billing data from the outpatient sector to estimate the number of patients with newly diagnosed HIV, the overall number of patients with HIV, and the HIV test rates in those with statutory health insurance in Germany. MATERIALS AND METHODS: We analyzed billing data from the outpatient sector for all persons covered by statutory health insurance between 2009 and 2018. We designed annual cohorts of patient for the years 2011 to 2017 and analyzed the number of HIV diagnoses, the number of HIV-related care services, and HIV testing rates. RESULTS: Every year, about 6000 new patients with HIV are treated in outpatient care. The total number of patients with HIV in 2011 was about 59,300 (0.106%), which increased to 80,800 (0.141%) in 2017. The average increase in the total number of patients per year of about 3600 was significantly below the estimated number of newly treated patients for each year. CONCLUSION: The results may provide an indication of patients receiving HIV care in the outpatient sector. The secondary data provide the possibility of developing another epidemiological data source for population-based representation of the administrative prevalence of HIV. To clarify over-representation, there is a need for further research on patients who are using outpatient care for the first time.