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Table 1 Clinical and laboratory findings of patients infected with the 2009 H1N1 virus, with and without pneumonia

From: Epidemiological and clinical characteristics of childhood pandemic 2009 H1N1 virus infection: an observational cohort study

Group No Pneumonia
(n = 137)
Pneumonia
(n = 80)
P
Clinical characteristics    
   Mean age (y) 6.5 ± 4.0 5.5 ± 3.1 0.04
   Male/Female 72/65 60/20 0.001
   Duration of fever (d)    
Before admission 1.9 ± 0.9 2.0 ± 0.9 NS
Total 2.2 ± 1.0 2.6 ± 0.9 0.006
   Hospitalization (d) 4.5 ± 1.4 5.6 ± 1.3 < 0.001
   Oseltamivir, < 48 h (n,%)a 130 (95) 75 (94) NS
Laboratory findings    
Haemoglobin (g/dL) 12.5 ± 0.9 12.8 ± 1.0 0.03
Leukocyte (× 109/L) 6.5 ± 3.3 8.8 ± 3.7 < 0.001
   Neutrophil (%) 59 ± 19 69 ± 20 < 0.001
   Lymphocyte (%) 30 ± 17 21 ± 17 < 0.001
   Monocyte (%) 10 ± 4 8 ± 4 0.005
Platelet (× 109/L) 224 ± 58 241 ± 61 0.04
CRP (mg/dL) 1.2 ± 1.5 2.4 ± 2.5 < 0.001
ESR (mm/h) 16 ± 12 18 ± 13 NS
  1. CRP; C-reactive protein, ESR; erythrocyte sedimentation rate. NS, statistically non-specific
  2. a Number (%) of patients who received oseltamivir treatment within 48 h of fever onset.