Table I. Associations of HLA homozygosity and HED with CSS.

	HR	95% CI	p Value
Homozygosity of HLA allele
HLA-A	1.04	0.43–2.53	0.92
HLA-B	1.29	0.45–3.70	0.63
HLA-C	1.32	0.54–3.24	0.55
HLA-DQB1	1.08	0.41–2.81	0.88
HLA-DRB1	0.99	0.35–2.84	0.99
At least one homozygosity of HLA
HLA-I	1.17	0.57–2.40	0.67
HLA-II	1.01	0.39–2.63	0.99
HED high of HLA allele
HLA-A	1.24	0.63–2.43	0.53
HLA-B	0.44	0.21–0.90	0.024
HLA-C	0.61	0.31–1.22	0.16
HLA-DQB1	1.01	0.52–1.99	0.97
HLA-DRB1	1.01	0.51–1.99	0.98

CI, confidence interval; HR, hazard ratio.