Table 3 Univariate analysis of blood parameters, the lung bacterial load and the etiology of pneumonia

CRP² (peak) (mg/L)

77.1 (43.2 −195.4)³

361.4 (264.95—559.2)

438.1 (287.6—489.15)

< 0.01

Procalcitonin (ng/L)

0.32 (0.15 −0.95)

8.53(1.83—46.6)

15 (8.4—65)

< 0.01

Lactate (mmol/L)

1.4 (1.05—1.8)

2.3 (1.63—10.9)

3.85 (2.3—5.95)

< 0.01

Leukocytes (per mL)

7360 (5375—12285)

15730 (4520—30510)

12160 (4917—17882)

0.34

Creatinine (mg/dL)

0.8 (0.67—1.33)

1.43 (0.84—2.7)

2.3 (1.5—5.74)

< 0.01

Bacterial load (cfu/mL)

1351 (305.2—7940.4)

22452 (719—85254)

5465 (597.6—25018.7)

0.204