Table 3. Laboratory test and allergy test results in patients with EoE and controls.

Laboratory test and allergy test	EoE patients	Controls	p-value
Serum eosinophil count (/mm3)	344.0 (238.0–500.0)	127.5 (88.8–181.8)	0.01
Serum eosinophil ≥500/mm3	6 (28.6)	0 (0.0)	<0.001*
Total	21	42
Serum IgE count (U/mL)	383.0 (212.0–618.5)	60.5 (37.5–330.0)	0.04
Serum IgE ≥100 U/mL	10 (90.9)	6 (42.9)	0.03*
Total	11	14
Negative allergy tests†	2 (11.8)	10 (52.6)	0.01
Positive allergy tests	15 (88.2)	9 (47.4)
Total	17	19

Values are presented as median (interquartile range), number (%), or number only.

EoE: eosinophilic esophagitis, Ig: immunoglobulin.

^*p-value from Fisher's exact test. ^†Allergy tests included IgE-specific blood tests or skin allergy prick tests.