TABLE 1

Clinical characteristics and laboratory results for blood, liver function, and C-reactive protein for 80 patients with M. pneumoniae infectiona

Clinical characteristicMean ± SD (range)bPc
Age in yrs6.6 ± 3.3 (3–17)0.859
Gender (M:F)31:49
Fever duration before admission (days)4.3 ± 2.7 (0–10)0.014
Total fever duration (days)5.7 ± 3.4 (0–14)0.426
Hospitalization duration (days)7.3 ± 5.0 (3–19)0.210
Red blood cell (million/μl)4.6 ± 0.4 (3.4–5.7)0.526
Hemoglobin (g/dl)12.6 ± 1.0 (10.1–14.4)0.855
Platelet (1,000/μl)271.2 ± 76.4 (114.0–454.0)0.004
White blood cell (1,000/μl)9.2 ± 3.9 (3.8–20.7)0.158
    Segment (%)63.7 ± 13.2 (28.0–91.0)0.375
    Lymphocyte (%)26.3 ± 11.3 (5.0–65.0)0.465
    Eosinophil (%)1.9 ± 2.8 (0.0–8.6)0.100
    Basophil (%)0.3 ± 0.4 (0.0–3.0)0.216
    Monocyte (%)7.0 ± 3.0 (1.8–14.0)0.089
    AST (U/liter)34.6 ± 11.3 (22.0–65.0)0.634
    ALT (U/liter)20.2 ± 13.2 (9.0–66.0)0.603
    CRP (mg/liter)43.5 ± 42.6 (1.4–215.4)0.328
  • a CRP, C-reactive protein; AST, aspartate transaminase; ALT, alanine transaminase.

  • b Except as noted otherwise in column 1.

  • c The P value of Pearson’s correlations was determined using initial M. pneumoniae IgM values. The fever duration before admission and the platelet count were significantly correlated with M. pneumoniae IgM titers.