Fig. 1

Comparison of serum biomarker and WBC levels between a drug induced group and bacterial pneumonia group. There was no significant correlation between d-pneumonia and b-pneumonia with regard to KL-6 (a) and SP-A (b) levels. However, SP-D (c) and WBC (d) levels showed a significant correlation (P < 0.001, P < 0.05). In the box plots, the boundary of the box closest to zero indicates the 25th percentile, a black line within the box marks the median, and the boundary of the box farthest from zero indicates the 75th percentile. Whiskers above and below the box indicate the 10th and 90th percentiles. Points above and below the whiskers indicate outliers outside the 10th and 90th percentiles. The dotted line indicates the cut off value. KL-6, Krebs von den Lungen-6; SP, Surfactant protein; WBC, White blood cell