[Estimating the costs associated with nosocomial XXXX . A case-control study].

@entity1 @entity293 @entity580
BACKGROUND: @entity580 ( @entity580 ) is associated with increased resource use. The current study addressed the cost excess attributable to nosocomial @entity293 (NUTI). METHODS: Case-control study conducted in a cohort population. For matching, the Diagnostic Related Group (DRG) to which the episode of case @entity1 was ascribed was used. Then, a further search was conducted in the hospital discharge database with the following parameters: DRG, gender, age, admission date, department, comparison of length of stays, main diagnosis, co-morbidities, number of secondary diagnoses and procedures. Matching was achieved for 64 episodes (71%), and upon them an estimation of costs was performed. RESULTS: The mean length of stay for cases were 15.3 (median: 12) and 12.3 (median: 11) days for cases and controls, respectively (p = 0.0001). The excess of length of stay attributable to NUTI was 3 days (95% CI 1.6-4.7), longer for @entity1 admitted to Medical Departments (5.3 days) than for @entity1 admitted to Surgical Departments (2 days) (p = 0,03). The use of diagnostic resources was significantly higher for bacteriological testing only. The use of antibiotics and fluid therapy was higher among infected @entity1 . Out of the total excess of the estimated costs per episode, 132,047 ptas, 93% corresponded to the increase in hospital stay. Ten @entity1 (15.6%) were responsible for 68% of the total of extra-costs. In 17 occasions (26.6%), the control @entity1 used more resources than the infected @entity1 . CONCLUSIONS: Nosocomial @entity293 is associated with a resource use directly related to its presence. For the most part, it is related to the prolongation of hospital stay.
