Table 4. Conditional logistic regression models of HLA-B and three different conditions of ERAP1.

Factor B	Ho	Patients N = 343	Controls N = 450	P	OR (95% CI)
+	+	32	7	<10−5	10.72 (4.62–24.91)
+	-	146	76	<10−5	4.51 (3.20–6.35)
-	+	32	55	>0.05
-	-	133	312		1.0
Factor B	He
+	+	79	40	<10−5	5.03 (3.16–7.98)
+	-	99	43	<10−5	5.86 (3.75–5.14)
-	+	88	171	>0.05
-	-	77	196		1.0
Factor B	dHe
+	+	39	23	<10−5	3.64 (2.09–6.34)
+	-	139	60	<10−5	4.98 (3.45–7.18)
-	+	31	79	>0.05
-	-	134	288		1.0
Factor B	N
+	+	28	13	<10−5	4.35 (2.19–8.64)
+	-	150	70	<10−5	4.33 (3.07–6.11)
-	+	14	62	0.01	0.46 (0.25–0.84)
-	-	151	305		1.0

“Ho” are individuals H2H2,H3H3 and H4H4; “He” are individuals H1H2,H1H3 and H1H4; “dHe” are individuals H2H3,H2H4 and H3H4; “N” are individuals H1H1.

CI confidence interval.