1463. The Rates of UTI Outpatient and Inpatient Visits from 2001 to 2015 Among an Insured Population

BACKGROUND: Hospitalizations attributable to urinary tract infections (UTI) have increased in recent years. One possible reason for the increase in admissions is a lack of effective oral agents, due to increasing rates of antimicrobial resistance, necessitating treatment with IV antibiotics. Our objective was to compare the rates of inpatient vs. outpatient treatment for UTIs. METHODS: We used the MarketScan database to identify UTI inpatient and outpatient visits from January 2001 through September 2015. Incidence rates for inpatient and outpatient visits were determined as a function of people at risk for UTIs. A difference-in-difference model with a change point in 2007 was used. RESULTS: During our study period, we identified 32,521,146 outpatient visits for UTI and 297,470 inpatient UTI visits. Rates for inpatient and outpatient visits were rising at similar rates before 2007. After 2007, the slopes differed, and the incidence of outpatient visits increased statistically (P = 0.023) when compared with inpatient visits. CONCLUSION: Incidence of UTI hospitalizations is increasing but not as quickly as UTI outpatient visits. Since 2007, patients are more likely to be treated in the outpatient setting rather than in the inpatient setting. DISCLOSURES: All authors: No reported disclosures.