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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.