Table 2

 Chest radiological features of SARS and CAP patients on admission

Chest radiological featuresSARS group (n = 16)CAP group (n = 32)Matched odds ratio95% CI
Results are expressed as number (%).
*OR and 95% CI for “air-space consolidation” versus “normal” plus “other features”.
†OR and 95% CI for “hyperinflation” versus “normal volume” plus “volume loss”.
All children in both clinical groups subsequently had abnormal chest radiographs.
Radiological abnormalities*
    Air space consolidation13 (81%)19 (59%)2.960.60 to 16.33
    Other features (e.g. reticular, nodular)0 (0%)6 (19%)
    Normal3 (19%)7 (22%)
Number of lesions
    Unifocal11 (69%)17 (53%)2.590.38 to 21.67
    Multifocal2 (13%)8 (25%)
Lung volume†
    Hyperinflation2 (13%)13 (41%)0.210.03 to 1.24
    Normal volume14 (88%)18 (56%)
    Volume loss0 (0%)1 (3%)
Distribution of lesions
    Peripheral6 (38%)6 (19%)3.430.68 to 17.95
    Central7 (44%)24 (75%)