Table 1: Demographics of patients recruited to study. Values expressed as means and 95% confidence intervals.

Severe sepsis (ICU)InfectionControl
ICU admissionDay 7 ICU

54325320
Median age (yrs)71 (60–76)72 (61–79)71 (49–81)30 (27–33)
Gender
 Male23 (54%)16 (53%)33 (62%)8 (40%)
 Female27 (46%)14 (47%)20 (38%)12 (30%)
Patient type
 Surgery2320
 Medical3112
Bacteraemia
 Gram positive1024
 Gram negative329
APACHE II21 (19–22)18.4 (15.7–21.7)
SOFA12 (9.1–15)8.9 (6.9–10.7)
SAPS II52 (47–57)50 (42–58)
Septic shock42 (84%)15 (50%)
Respiratory infection23 (46%)6 (20%)
Abdominal infection14 (28%)16 (53%)
Other infection13 (26%)8 (27%)

SOFA: sequential organ failure assessment score; SAPS II: simplified acute physiology score; APACHE: acute physiology and chronic health evaluation.