Table 2 Comparison of HLA-Cw*06 in PsA cases, psoriasis and controls

HLA-Cw06*	PsA cases			Population controls n = 166	Type I psoriasis n = 611
HLA-Cw06*	Total cohort n = 453	Type I n = 335	Type II n = 115	Population controls n = 166	Type I psoriasis n = 611
0	262 (57.8)	166 (49.6)	94 (81.7)	138 (83.1)	254 (41.6)
1	182 (40.2)	162 (48.4)	19 (16.5)	28 (16.9)	323 (52.9)
2	9 (2)	7 (2)	2 (1.8)	0	34 (5.5)
Phenotype	191 (42.2)	169 (50.4)	21 (18.3)	28 (16.9)	357 (58.4)
p-Value*	5.5×10⁻⁹	4.39×10⁻¹³	0.76		2.15×10⁻²¹

PsA, psoriatic arthritis. Type I, patients with PsA with type I psoriasis; type II, patients with PsA with type II psoriasis.
*Comparison of phenotype (carriage of one or two alleles) with population controls using the χ2 test.
Data shown in n (%). Data were not available for three patients as to the type of psoriasis present.