12 month time period | No of central-venous-catheter-related bloodstream infections | Patients | Patient days (National Nosocomial Infections Surveillance/CDC denominator) | Incidence per 1000 patient days (CDC denominator) | Catheter days (HELICs denominator) | Incidence per 1000 device days Helics denominator |
September 2005–August 2006 (year 1) | 9 | 255 | 1918 | 4.69 | 2660 | 3.38 |
September 2006–August 2007 (year 2) | 7 | 257 | 1990 | 3.52 | 2613 | 2.68 |
September 2007–August 2008 (year 3) | 1 | 235 | 1800 | 0.56 | 2155 | 0.46 |
September 2008–August 2009 (year 4) | 0 | 225 | 1562 | 0.00 | 2138 | 0.00 |
CDC, Centers for Disease Control and Prevention; HELICS, Hospitals in Europe Links for Infection Control Surveillance.