TABLE 2

Biological, microbiological and radiological characteristics at baseline, and treatment and outcome of the 200 patients included in the PneumOLD-CT study

Characteristics#n (%)Median (IQR)
Biological
 White blood cell count 103 per mm3 (on admission)11.0 (8.2–14.0)
 proBNP ng·L−1 (range <300 ng·L−1) (N=170)1836 (667–3801)
 CRP mg·L−1 (range 0–10 mg·L−1)84.0 (45.8–159.6)
 PCT µg·L−1 (range <0.25 µg·L−1) (N=185)0.33 (0.13–1.30)
 Urea mmol·L−17.9 (6.0–11.9)
 Creatinine µmol·L−197.0 (77.0–133.0)
 Albumin g·L−1 (N=193)35.0 (32.0–38.0)
 Prealbumin mg·L−1 (N=193)122.0 (95.0–162.0)
Microbiological
 Positive culture
  Blood (N=192)11 (5.7)
  Urinary (N=177)82 (46.3)
  Sputum (N=81)36 (44.4)
  Pleural effusion (N=6)0
 Positive urinary antigen
  Legionella (N=183)0
  Pneumococcal (N=178)8 (4.5)
 Positive serology (IgM)
  Legionella pneumophila2 (1)
  Chlamydophila pneumoniae4 (2)
  Mycoplasma pneumoniae3 (1.5)
Radiological
 Chest radiography
  Standing66 (33)
  Two incidences63 (31.5)
 Delay of LDCT chest scan h2.2 (0.9–15.4)
 Radiologist's opinion on quality (good/satisfactory)127 (63.5)
 Radiologist's estimate of pneumonia probability
  High103 (51.5) 
  Intermediate23 (11.5) 
  Low74 (37.0) 
Treatment
 Duration of AT days7 (6–9)
Outcome
 Transfer to intermediate care unit or ICU13 (7.0)
 30-day mortality11 (5.4)
 90-day mortality30 (15.0)

IQR: interquartile range; proBNP: pro-brain natriuretic peptide; CRP: C-reactive protein; PCT: procalcitonin; IgM: immunoglobulin M; LDCT: low-dose computed tomography; AT: antimicrobial therapy; ICU: intensive care unit. #: the number of patients (N) is 200 unless otherwise stated.