Comparison of neonatal blood culture audits: 1996–2001 versus 2002–2007
| Year of audit | Blood cultures | Proportion* of blood cultures with | Proportion of gram-positive: gram-negative pathogens | ||
| No growth | Contaminants | Pathogen(s) | |||
| 1996–2001 | 2442 | 50% (1213) | 32% (781) | 18% (448) | 54%: 46% |
| 2002–2005* | 5151 | 50% (2663) | 34% (1755) | 16% (809) | 55%: 45% |
| 2006–2007* | 1603 | 60% (952) | 30% (478) | 11% (183) | 43%: 57% |
| 2002–2007* | 6754 | 54% (3615) | 33% (2233) | 15% (992) | 53%: 47% |
↵* Cumulative proportions may exceed 100% during 2002–2007 as some cultures grew both pathogens and contaminants.