Fig. 3From: Procalcitonin is not an independent predictor of 30-day mortality, albeit predicts pneumonia severity in patients with pneumonia acquired outside the hospitalBox plots showing procalcitonin (PCT) levels, C-reactive protein (CRP) levels, and white blood cell (WBC) counts according to pneumonia severity determined by the pneumonia severity index of younger (≤74 years old) and elderly (≥75 years old) patients with pneumonia occurring outside the hospital setting. The box plots show 25th, 50th, and 75th percentiles, and outliers. *: p < 0.05, **: p < 0.01Back to article page