Table 4 Risk of sepsis according to underlying bacteria
AetiologyAll agesAged 0–15 yearsAged ⩾16 years
HR, 95% CIHR, 95% CI†HR, 95% CIHR, 95% CI†HR, 95% CIHR, 95% CI†
Pneumococci2.5; 1.2 to 5.13.9; 2.2 to 7.01.4; 0.3 to 7.33.4; 1.1 to 10.62.8; 1.3 to 6.34.1; 2.1 to 8.1
Staphylococci1.9; 1.2 to 3.33.6; 2.4 to 5.22.8; 1.0 to 8.12.1; 0.9 to 5.21.7; 0.9 to 3.14.0; 2.6 to 6.1
Gram-negative bacteria1.4; 0.9 to 2.22.3; 1.6 to 3.32.2; 0.6 to 7.84.9; 1.9 to 12.31.3; 0.8 to 2.12.0; 1.4 to 3.0
Any streptococci*1.1; 0.6 to 2.12.3; 1.4 to 3.90.2; 0.0 to 1.70.6; 0.1 to 2.51.6; 0.7 to 3.23.4; 1.9 to 6.3
Meningococci0.4; 0.1 to 3.60.6; 0.1 to 5.0NCNCNC0.6; 0.1 to 5.0
  • HR, hazard ratio estimated through Cox regression. NC, Not calculated due to lack of positive outcomes.

  • *Streptococci not specified as Pneumococci. May include individuals with pneumococcal infection but who only received a diagnosis of “streptococci” and not specifically Streptococcus pneumoniae.

  • †Compared with reference individuals from the general population (in italics).