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Table 3 Comparison of laboratory findings between children with MP pneumonia positive for MP-specific IgM and those negative for MP-specific IgM at the time of admission due to MP pneumonia

From: Clinical significance of Mycoplasma pneumoniae specific IgM titer in children hospitalized with Mycoplasma pneumoniae pneumonia

Variables Children positive MP-specific IgM, mean ± SD Children negative MP-specific IgM, mean ± SD P value
WBC, /µL 9897 ± 4940 7130 ± 2174 < 0.001
Neutrophil (%) 63.9 ± 14.4 60.7 ± 16.2 0.254
Lymphocyte (%) 24.8 ± 11.2 28.0 ± 14.1 0.154
Eosinophil (%) 2.1 ± 0.2 1.1 ± 0.2 0.002
Monocyte (%) 8.2 ± 0.3 9.0 ± 0.7 0.252
CRP, mg/dL 3.2 ± 0.5 3.1 ± 0.5 0.896
ESR, mm/h 37.4 ± 2.3 33.5 ± 2.4 0.237
LDH, U/L 865.7 ± 34.6 612.7 ± 21.4 < 0.001
AST, IU/L 47.9 ± 3.8 36.9 ± 2.5 0.018
ALT, IU/L 38.1 ± 4.1 19.7 ± 2.3 < 0.001
Albumin, g/dL 5.3 ± 0.1 5.2 ± 0.2 0.584
Procalcitonin, ng/mL 0.2 ± 0.0 0.4 ± 0.2 0.490
  1. ALT: alanine aminotransferase; AST: aspartate aminotransferase; CRP: C-reactive protein; ESR: erythrocyte sedimentation rate; IgM: immunoglobulin M; LDH: lactate dehydrogenase; MP: Mycoplasma pneumoniae; PIBO: post-infectious bronchiolitis obliterans; SD: standard deviation; WBC: white blood cells