Table 1.

Summary of patient characteristics, IgE levels and sIgE/tIgE.

Type of food	All food	Egg	Milk	Wheat
Challenges, n (%)	209	69 (33)	51 (24.4)	52 (24.9)
Median age at OFC, months	43.5 [3,228]	36 [4,156]	36 [3,132]	45 [5,168]
Sex, n (%)
Male	147 (70.3)	43 (62.3)	33 (64.7)	47 (90.4)
Female	62 (29.7)	26 (37.7)	18 (35.3)	5 (9.6)
sIgE, KU/L
All sample	3.27 [0.100]	2.59 [0,94.5]	3.14 [0.100]	8.45 [0.02,100]
OFC-positive	9.45 [0,100]	3.15 [0,94.5]	15.1 [0.1,100]	48.5 [0.4,100]
OFC-negative	1.81 [0,100]	2.07 [0.01,43.1]	0.57 [0,11.9]	2.15 [0.02,78.7]
p value	<0.01	0.02	<0.01	<0.01
tIgE, KU/L
All sample	361 [5.45, 5,000]	238 [5.45, 5,000]	159 [11.9, 5,000]	432.5[11.9, 5,000]
OFC-positive	386.8 [5.45, 3,826]	310 [5.45, 1,988]	361 [11.9, 3,826]	465 [11.9, 1,988]
OFC-negative	330 [17.1, 5,000]	238 [18.3, 5,000]	155 [17.1, 5,000]	333 [18.3, 5,000]
p value	0.26	0.57	0.88	0.41
sIgE/tIgE ratio
All sample	12.8 [0, 395.8]	13.5 [0, 94.5]	17.0 [0, 382.2]	44.4 [0, 382.2]
OFC-positive	44.2 [0, 395.8]	31.6 [0, 352.4]	36.3 [2.52, 382.2]	94.8 [1, 325.9]
OFC-negative	4.2 [0, 104.8]	5.1 [0.3, 86.6]	1.4 [0, 72.1]	4.78 [1.09, 4.78]
p value	<0.01	<0.01	<0.01	<0.01