Supplementary Table 1

Comparison of clinical parameters between groups of patients included in the training sets 
(Mann Whitney test)

   Influenza A (n=11) vs Bacteria (n=12)
					Influenza A 		Bacteria		p-value
Age (years)				0.92 (.33-1.50)		0.33 (.25-.50)		0.20
WBC/mm3					7,900 (7,100-10,500)	11,800 (9,050-17,300)	0.02
Neutrophils (%)				19 (5-34)		30.5 (13.5-57)		0.15
Lymphocytes (%)				68 (54-91.5)		56.5 (35-74.5)		0.12
Monocytes (%)				6 (3.5-11)		4 (4-9.5)		0.57
Days Hospitalization prior to sample	2 (1-2)			2.5 (2-5)		0.06
C-reactive protein (mg/dL)		1.8 (0.7-7.4)		4.3 (2.1-8.2)		0.24

                              

   Ecoli (n=10) vs Saureus (n=10)
					E.coli			S.aureus		p-value
Age (years)				0.29 (0.23-4.20)	1.08 (0.50-8.50)	0.06
WBC/mm3					10,300 (9,200-17,100)	13,200 (6,500-14,100)	0.10
Neutrophils (%)				41.6 (21.5-58.85)	43.0 (25.75-55.5)	1.00
Lymphocytes (%)				46.6 (27.6-64)		41.2 (25.5-55.15)	0.60
Monocytes (%)				8.0 (4.25-10.5)		6.7 (5.8-10.5)		0.93
Days Hospitalization prior to sample	2 (2-3.5)		4.5 (3-6.5) 		0.01
C-reactive protein (mg/dL)		5.2 (2.1-7.4)		3.3 (0.9-13.5)		0.48



   E.coli (n=11) vs S.pneumoniae (n=11)
					E.coli			S.pneumo		p-value
Age (years)				0.33 (0.25-0.40)	1.33 (0.33-2.00)	0.16
WBC/mm3					7,169 (3,328-8,322)	5,725 (2,573-9,252)	0.69
Neutrophils (%)				27.0 (14-49.3)		53.5 (26-68.3)		0.08
Lymphocytes (%)				52 (35.8-76.0)		34 (18.75-67.0)		0.06
Monocytes (%)				10 (7.9-12)		5.5 (3.5-9.35)		0.04
Days Hospitalization prior to sample	3 (2-3)			5 (3-6)			0.04
C-reactive protein (mg/dL)		3.7 (0.9-7.5)		5.9 (4.3-10.7)		0.12

   

   S.aureus (n=12) vs S.pneumoniae (n=11)
					S.aureus		S.pneumo		p-value
Age (years)				0.95 (0.66-1.62)	1.33 (0.33-2.00)	0.95
WBC/mm3					12,400 (9,550-17,200)	16,600 (13,800-20,100)	0.08
Neutrophils (%)				37 (25.5-54)		45 (14.5-63.5)		0.77
Lymphocytes (%)				46 (28-55.3)		36.5 (27-67)		0.97
Monocytes (%)				10 (7.1-13)		4.5 (3-10.5)		0.04
Days Hospitalization prior to sample	4.5 (3.5-5.5)		5 (3-6)			0.80
C-reactive protein (mg/dL)		3.7 (1.1-6.3)		6.6 (4.4-11.6)		0.16

