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Table 3 The association between a positive (blood) culture and mortality

From: An overview of positive cultures and clinical outcomes in septic patients: a sub-analysis of the Prehospital Antibiotics Against Sepsis (PHANTASi) trial

  p RR 95% CI
Positive pre-hospital blood culture
  Unadjusted analysis
 28-day mortality 0.002 1.82 1.24–2.55
 90-day mortality 0.004 1.60 1.16–2.12
  Adjusted analysis
 28-day mortality < 0.001 2.10 1.36–3.09
 90-day mortality 0.004 1.71 1.19–2.37
Positive in-hospital blood culture
  Unadjusted analysis
 28-day mortality 0.115 1.31 0.92–1.68
 90-day mortality 0.059 1.30 0.98–1.68
  Adjusted analysis
 28-day mortality 0.025 1.56 1.05–2.25
 90-day mortality 0.022 1.45 1.05–1.95
Bacteremia (positive pre-hospital and/or in-hospital blood culture)
  Unadjusted analysis
 28-day mortality 0.018 1.42 1.06–1.87
 90-day mortality 0.006 1.39 1.09–1.73
Adjusted analysis
 28-day mortality 0.002 1.71 1.22–2.34
 90-day mortality 0.002 1.55 1.18–1.99
Culture-positive sepsis (with or without bacteremia)
  Unadjusted analysis
 28-day mortality 0.006 1.43 1.11–1.83
 90-day mortality 0.001 1.41 1.15–1.71
  Adjusted analysis
 28-day mortality 0.004 1.54 1.15–2.03
 90-day mortality < 0.001 1.53 1.21–1.91
  1. Adjusted for age, group allocation, antibiotics at home, hospital location, source of infection, and total amount of blood cultures drawn