TABLE 5

Evolution of patients

Blood-culture-positive pneumococcal pneumoniaBlood-culture-negative pneumococcal pneumoniap-value
Subjects362555
Mechanical ventilation0.30
 No289 (86)444 (87)0.56
 NIMV16 (5)14 (3)0.12
 IMV31 (9)50 (10)0.77
LOS days9 (5–14)7 (4–10)<0.001
ICU mortality#12 (14)20 (20)0.27
30-day mortality27 (8)27 (5)0.12
 Before 200719 (8)18 (5)0.16
 After 2007+8 (9)9 (6)0.49
  • Data are presented as n, n (%) or median (interquartile range), unless otherwise stated. Percentages calculated on nonmissing data. NIMV: noninvasive mechanical ventilation; IMV: invasive mechanical ventilation; LOS: length of hospital stay; ICU: intensive care unit. #: 88 patients in the bacteraemic pneumococcal pneumonia group and 102 patients in the nonbacteraemic pneumococcal pneumonia group were used to calculate the percentages; : percentages calculated for patients included before 2007 (240 patients in the bacteraemic pneumococcal pneumonia group, and 353 patients in the nonbacteraemic pneumococcal pneumonia group); +: percentages calculated for patients included after 2007 (93 patients in the bacteraemic pneumococcal pneumonia group and 144 patients in the nonbacteraemic pneumococcal pneumonia group).