TABLE 4

Probability of bacteraemic CAP

Risk factorsProtective factors
Previous antibiotic and pneumococcal vaccinePrevious antibioticPneumococcal vaccineNone
None1.32.22.54.3
ICU admission2.33.94.57.4
 Plus pleuritic pain5.08.29.415.1
 Plus C-reactive protein ⩾21.6 mg·dL−15.38.710.015.9
 Plus pleuritic pain and C-reactive  protein ⩾21.6 mg·dL−111.117.519.729.5
Pleuritic pain2.84.85.59.0
 Plus c-reactive protein ⩾21.6 mg·dL−16.510.512.018.9
C-reactive protein ⩾21.6 mg·dL−13.05.05.89.5