Table 1 Demographic and clinical characteristics of the studied cohort

 - No. of subjects

196

 - mean age in years (range)

1.99 (0–15)

 - median age in years

0.83

 - interquartile in years

0.18–2.88

 - sex ratio M/F

1.23

 - dyspnea

92 (46.9)

 - cough

39 (19.9)

 - hyperthermia

77 (39.3)

 - other^a

36 (18.4)

Antibiotic treatment before inclusion (%)

23 (11.7)

Chest radiography (%)

124 (63.3)

 - pulmonary condensation

32

 - interstitial syndrome

54

 - extra-pulmonary abnormal image

17

 - no abnormal image

21

 - emergency unit

187 (95.4)

 - intensive care unit

9 (4.6)

Hospitalized patients (%)

154 (78.6)

Average length of hospital stay in days

7.8

Biological inflammatory syndrome (%)

63 (31.2)

Pneumonia (%)

86 (43.9)

S. pneumoniae pneumonia (%)

23 (11.7)