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Table 4 Multivariate analysis of factors associated with mortality among cases of hospital-associated and community-acquired Staphylococcus aureus bacteraemia in Denmark from 1995-2008

From: Stable incidence and continued improvement in short term mortality of Staphylococcus aureus bacteraemia between 1995 and 2008

  Hospital-associated SAB Community-acquired SAB
  30-d mortality (%) Adjusted MRR (95% CI) 30-d mortality (%) Adjusted MRR (95% CI)
Overall 2368/9412 (25.2%)   1439/5074 (28.4%)  
Age, years     
 1 > 19/337 (5.6%) 0.45 (0.28-0.73) 1/58 (1.7%) 0.13 (0.02-0.93)
 1-15 9/232 (3.9%) 0.27 (0.14-0.53) 1/235 (0.4%) 0.03 (0.04-0.23)
 16-35 32/535 (6.0%) 0.39 (0.27-0.56) 15/405 (3.7%) 0.25 (0.14-0.42)
 36-55 282/1733 (16.3%) 1.0 152/938 (16.2%) 1.0
 56-75 983/3982 (24.7%) 1.7 (1.5-1.9) 483/1734 (27.9%) 1.8 (1.5-2.2)
 > 75 1043/2593 (40.2%) 3.2 (2.8-3.7) 787/1704 (46.2%) 3.6 (3.0-4.4)
Sex     
 Female 988/3755 (26.3%) 1.0 616/1927 (32.0%) 1.0
 Male 1380/5657 (24.4%) 0.90 (0.83-0.98) 823/3147 (26.2%) 0.82 (0.74-0.92)
CCI score     
 0 527/2822 (18.7%) 1.0 435/2293 (19.0%) 1.0
 1-2 1049/3868 (27.1%) 1.3 (1.1-1.4) 606/1801 (33.6%) 1.3 (1.1-1.5)
 > 2 792/2722 (29.1%) 1.4 (1.2-1.6) 398/980 (40.6%) 1.6 (1.4-1.9)
Alcohol-related disorders     
 No 2113/8585 (24.6%) 1.0 1251/4532 (27.6%) 1.0
 Yes 255/827 (30.8%) 1.7(1.5-2.0) 188/542 (34.7%) 1.9(1.6-2.2)
Year     
 1995-1997 526/1893 (27.8%) 1.0 262/989 (26.5%) 1.0
 1998-2000 502/1992 (25.2%) 0.83 (0.74-0.94) 365/1261 (28.9%) 1.00 (0.85-1.17)
 2001-2003 512/2010 (25.5%) 0.79 (0.70-0.89) 257/893 (28.8%) 0.89 (0.75-1.06)
 2004-2006 535/2171 (24.6%) 0.74 (0.66-0.84) 355/1155 (30.7%) 0.90 (0.76-1.05)
 2007-2008 293/1346 (21.8%) 0.65 (0.56-0.75) 200/776 (25.8%) 0.74 (0.61-0.89)
  1. SAB: Staphylococcus aureus bacteraemia; MRR: Mortality rate ratio; CI: confidence interval, CCI: Charlson comorbidity index.