Age groups | 0-15 y (n = 217) | 16-40 y (n = 100) | 41-64y (n = 35) | ≥ 65 y (n = 21) | P |
---|---|---|---|---|---|
Clinical Characteristics | Â | Â | Â | Â | Â |
   Age, mean (y) | 6.2 ± 3.7 | 25.2 ± 7 | 51.9 ± 6.7 | 74 ± 5 | < 0.001 |
   Male/female | 132/85 | 45/55 | 14/21 | 5/16 | < 0.001 |
   Duration of fever (d) |  |  |  |  |  |
Before admission | 2.0 ± 1.9 | 2.0 ± 1.1 | 1.7 ± 1.5 | 1.5 ± 1.3 | 0.045 |
Total duration | 2.3 ± 1.0 | 2.9 ± 1.3 | 3.0 ± 1.7 | 4.1 ± 3.0 | < 0.01 |
   Oseltamivir, < 48 h* | 205 (94) | 89 (89) | 29 (83) | 15 (71) | NS |
   Hospitalisation (d) | 4.9 ± 1.5 | 5.4 ± 2.2 | 5.2 ± 2.9 | 8.8 ± 5.1 | < 0.001 |
   Pneumonia |  |  |  |  |  |
Number (%) | 80 (37) | 16 (16) | 9 (29) | 11 (52) | NS |
Male/female | 60/20 | 4/11 | 4/5 | 3/8 | < 0.001 |
   Underlying diseases | 17 (7.8) | 15 (15) | 15 (42.9) | 16 (76.2) | < 0.001 |
Laboratory findings | Â | Â | Â | Â | Â |
   Haemoglobin (g/dL) | 12.6 ± 0.9 | 13.5 ± 2.1 | 13.1 ± 1.6 | 12.9 ± 1.4 | < 0.001 |
   Leukocyte (×109/L) | 7.4 ± 3.6 | 6.4 ± 2.6 | 6.8 ± 2.8 | 7.6 ± 3.2 | < 0.001 |
Neutrophil (%) | 63 ± 19 | 66 ± 15 | 71 ± 14 | 64 ± 17 | NS |
Lymphocyte (%) | 27 ± 17 | 23 ± 13 | 20 ± 12 | 24 ± 14 | 0.037 |
Monocyte (%) | 9 ± 4 | 8 ± 4 | 8 ± 4 | 9 ± 4 | NS |
   Platelet (×109/L) | 230 ± 59 | 202 ± 46 | 204 ± 51 | 198 ± 55 | 0.001 |
   CRP (mg/dL) | 1.6 ± 2.0 | 2.4 ± 3.8 | 3.8 ± 4.6 | 6.1 ± 6.9 | < 0.001 |
   ESR (mm/h) | 17 ± 12 | 19 ± 17 | 37 ± 22 | 42 ± 19 | < 0.001 |