Table E6.

Effect size of HLA-DRB1∗01:03 and amoxicillin clavulanic acid–induced immediate hypersensitivity reactions across the different ethnic clusters

	No. of cases	MAF		OR (95% CI)	P value
		Cases	Controls
Italians	96	0.005	0.002	4.08 (0.39-42.02)	.2
Spanish	101	0.040	0.005	9.53 (4.00-22.71)	3.5 × 10−7
Northern Europeans	17	0	0.009	—	—

OR and P value as defined in Table II.