Table 2 Development of ICU surveillance data in 103 ICUs with ongoing surveillance from 2001-2010
Year | Patient days | Ventila-tor utiliza-tion rate | Noso-comial MSSA infections* | Noso-comial MRSA infections* | MRSA rate (%) | Incidence density of nosocomial MSSA infections* | Incidence density of nosocomial MRSA infections* | RR incidence densities of nosocomial MRSA infections* compared to baseline year 2001 (95%CI) | Incidence density of nosocomial infections* | RR incidence densities of nosocomial infections* compared to baseline year 2001 (95%CI) |
|---|---|---|---|---|---|---|---|---|---|---|
2001 | 322990 | 42.3 | 290 | 120 | 29.3 | 0.90 | 0.37 | 1 = ref | 7.56 | 1 = ref |
2002 | 332215 | 41.7 | 252 | 107 | 29.8 | 0.76 | 0.32 | 0.87 (0.67-1.13) | 6.74 | 0.89 (0.84-0.94) |
2003 | 338819 | 42.1 | 221 | 101 | 31.4 | 0.65 | 0.30 | 0.8 (0.62-1.05) | 6.66 | 0.88 (0.83-0.93) |
2004 | 343513 | 42.8 | 230 | 93 | 28.8 | 0.67 | 0.27 | 0.73 (0.56-0.96) | 5.80 | 0.77 (0.072-0.81) |
2005 | 360684 | 42.9 | 221 | 135 | 37.9 | 0.61 | 0.37 | 1.01 (0.79-1.29) | 6.46 | 0.85 (0.81-0.90) |
2006 | 353148 | 42.5 | 207 | 89 | 30.1 | 0.59 | 0.25 | 0.68 0.52-0.89) | 5.65 | 0.75 (0.70-0.79) |
2007 | 363476 | 42.4 | 167 | 70 | 29.5 | 0.46 | 0.19 | 0.52 (0.39-0.70) | 5.02 | 0.66 (0.62-0.71) |
2008 | 372463 | 43.1 | 150 | 77 | 33.9 | 0.40 | 0.21 | 0.56 (0.42-0.74) | 5.04 | 0.67 (0.63-0.71) |
2009 | 371865 | 42.9 | 150 | 72 | 32.4 | 0.40 | 0.19 | 0.52 (0.39-0.70) | 4.89 | 0.65 (0.61-0.69) |
2010 | 380173 | 44.1 | 138 | 57 | 29.2 | 0.36 | 0.15 | 0.40 (0.29-0.55) | 4.63 | 0.61 (0.58-0.65) |
total | 3539346 | 42.7 | 2026 | 921 | 31.3 | 0.57 | 0.26 | 5.80 |